Which process helps increase genetic diversity and variation within species?
A.)meiosis
B.)mitosis
C.)photosynthesis
D.)bacterial fission

Answers

Answer 1

Meiosis is the type of process that helps increase genetic diversity and variation within a species.

Answer 2

Answer:

a.meiosis

Explanataon:


Related Questions

How to make a dog throw up without hydrogen peroxide

Answers

grass makes dogs throw up

One possible form of a gene that codes for a particular trait is known as _______.

Answers

The correct answer is allele.
I hope I helped!

Which of these is the accessory organ to digestion that produces most of the digestive enzymes?

Answers

Answer:

I'm pretty sure it's liver

Explanation:

The correct answer would be liver

Please Help!

Where does replication occur in eukaryotic cells?

only in the nibosome

only in the cytoplasm

only in the mitochondra

only in the nucleus​

Answers

Answer:

I believe it is the "Nucleus."

Explanation:

Hope my answer has helped you!

Answer:

only in the nucleus

Explanation:

DNA replication is when DNA makes another copy of itself. DNA replication is needed in order to maintain the number of chromosomes that is characteristic to a species during cell division. During cell division, one parent cell divides into two daughter cells. If DNA replication did not occur, then the daughter cells would receive only half the number of chromosomes characteristic of that species.

Select the best answer for the question.
5. A runner is running the 60-meter dash, which is an oxygen-deficie
of energy is the runner's body using to power through the race?
O A. Catabolic
O B. Aerobic
O C. Anabolic
O D. Anaerobic

Answers

C. Anabolic pretty sure this is the one I got right but can’t remember

Answer:

D. Anaerobic

Explanation:

The human body gets energy by breaking a terminal phosphate from adenosine triphosphate (ATP), a high energy molecule. In the cells, ATP is produced during cellular respiration.  

Cellular respiration may be aerobic or anaerobic. Aerobic respiration occurs in presence of oxygen and yields 38 ATP from the oxidation of one glucose molecule whereas, anaerobic respiration occurs in absence of oxygen and yields only 2 ATP from the oxidation of one glucose molecule.  

Normally human body fulfils its energy requirement by aerobic respiration. But when energy is a requirement is more during running a race, doing heavy exercises, aerobic respiration alone does not fulfil energy requirement, in such condition the body fulfil its required energy through anaerobic respiration in an oxygen-deficient environment.  

Which scientific force is primarily responsible for maintaining control of your vehicle?

Answers

Answer:

Inertia

Explanation:

This force ensures that objects remain in one course with less tendency to change direction when in motion or at rest. This force is the reason why you can let free the wheel of a car in motion and the car will more or less maintain course without toppling over. It is this same force that ensures that greater energy is required to launch the car from complete stall to motion.  

Final answer:

Friction is the primary force responsible for controlling a vehicle, providing the necessary forces for both acceleration and circular motion via the interaction of the tires with the road surface.

Explanation:

The scientific force primarily responsible for maintaining control of your vehicle is friction. When tires rotate and attempt to push against the ground, friction acts in the opposite direction, allowing the vehicle to move forward in response to your control inputs. According to Newton's Third Law, for every action, there is an equal and opposite reaction, which in the context of movement, means the ground pushes back on the tires with a reactionary friction force. Secondly, per Newton's Second Law, this friction force causes the car to accelerate, as the throttle, engine, and drivetrain work in unison to apply force to the road through the tires.

During circular motion, such as turning a corner, it's the friction force that keeps the car from sliding outwards. Despite what might feel like an outward pull, this sensation is actually a fictitious force arising from our inertia; the real force at work is still friction, directed towards the center of the circle the car is navigating (centripetal force). This explains why in slippery conditions, like ice, a car may struggle to stay on course, as the coefficient of friction is significantly reduced, making it harder to generate the necessary centripetal force to keep the vehicle following the curve of the road.

Who developed the hypothesis that cells only come from other cells?

Answers

Answer:

Rudolf virchow in 1855

Explanation:

He said omnis cellula - e - cellula.

Mean cells formed from pre existing cells.

Final answer:

Rudolf Virchow developed the hypothesis that cells only come from other cells, which later became a central part of cell theory. Although, it should be noted that Robert Remak had published similar findings earlier, leading to a controversy. This principle complements earlier work by Schwann and Schleiden about the cell as the basic unit for all life.

Explanation:

The hypothesis that cells only come from other cells was developed by the German doctor Rudolf Virchow in 1858. This concept, a central part of cell theory, was summarized by Virchow using the Latin phrase omnis cellula a cellula, which means "all cells arise from cells." However, it's important to note that Robert Remak, a Polish scientist, and Virchow's former colleague, had published similar findings in 1852 and Virchow's lack of acknowledgment led to controversy over the credit for this aspect of cell theory.

Before Virchow, Theodor Schwann and Matthias Jakob Schleiden had suggested, in the early 1800s, that cells were the basic building blocks of all living things, setting the stage for the later development of cell theory. Virchow's observation of cell division under the microscope led to the realization that living cells can only arise from pre-existing cells, effectively refuting the idea of spontaneous generation and contributing to what we now understand as the modern cell theory.

The Cell Theory is now a fundamental principle of biology asserting that all organisms are made up of cells, all life functions take place within cells, and every cell originates from another pre-existing cell through the process of cellular division.

Which of the following is not part of a microarray used to detect SNPs? Question 2 choices Choice A., short DNA sequences attached to a glass slide Choice B., oligonucleotides that match the sequence of a known SNP site in the genome Choice C., mRNAs that are expressed from a specific gene Choice D., short DNA sequences synthesized with a specific sequence Choice E., oligonucleotides that differ in sequence only at the SNP itself and are positioned at different locations on a glas

Answers

The Answer:

Choice C: mRNAs that are expressed from a specific gene.

Compare and contrast prokaryotes and eukaryotes

Answers

There are two main types of cells among living organisms:

Eukaryotic cell (plants, animals, fungi) which is more compound, conntains nucleus with genetic material in it, membrane-bound organelles (mitochondria, Golgi apparatus, lysosomes etc). Because of their complex structure, the process within such cells are often more comlex then those in prokaryotes. Eukaryotic organisms are usually multicellularProkaryotic cell is simple cell found in Archea and Bacteria kingdom. It doesn't have nucleus neither membrane-bound organelles. Genetic material of these cell is located within the cytoplasm together with proteins and metabolites. First living cell was prokaryotic cell. Organisms that are prokaryotic are usually unicellular.

Which laboratory technique would be used to determine the energy content of food items?

Answers

the technique of calorymetry is used to determine the energy content of food items.

●Determination of energy is the basic principle technique.

Where is the squid shell found and what is it called

Answers

Answer:

It is called pen and it is located at the dorsal side

Explanation:

Squid belongs to the class Cephalopoda, subclass Coleoidea which is characterized by internal shell (unlike subclass Nautiloidea in which shell is located externally).

The shell of the squid (the pen) in very reduced and small, formed from chitin and located at the dorsal side. The pen provides attachment for muscles and it gives the squid stiffness.

Most likely, this internal shell evolved from the  external shell, because it is believed the ancestral of the organisms from the Coleoidea was probably nautiloid-like.

As a scientist employed by the FDA, you've been asked to sit on a panel to evaluate a pharmaceutical company's application for approval of a new weight loss drug called Fat Away. The company has submitted a report summarizing the results of their animal and human testing. In the report, it was noted that Fat Away works by affecting the electron transport chain. It decreases the synthesis of ATP by making the mitochondrial membrane permeable to H+, which allows H+ to leak from the intermembrane space to the mitochondrial matrix. This effect leads to weight loss.The method of weight loss described for Fat Away shows that the drug is acting as a metabolic

Answers

Answer:

uncouplers

Explanation:

Metabolic uncouplers are chemicals/molecules that have ability to shuttle H+ across the membrane disrupting the proton motive force necessary for the generation of ATP. As a consequence the ATP synthesis is reduced and  anabolism is slowed down. These processes also known as metabolic uncoupling lead to the reduction in biomass yield (weight loss).

Final answer:

Fat Away works as a metabolic uncoupler, similar to DNP. It alters the electron transport chain of the mitochondria, thereby reducing ATP synthesis and increasing metabolic rate, leading to weight loss.

Explanation:

The weight loss drug Fat Away acts as a metabolic uncoupler in the body, affecting the electron transport chain and decreasing ATP synthesis by making the mitochondrial membrane permeable to H+. This causes H+ to leak from the intermembrane space to the mitochondrial matrix, disturbing the proton gradient needed for ATP synthesis and creating a state of uncoupled respiration. The energy that would otherwise be harnessed to generate ATP is instead dissipated as heat, causing an increased metabolic rate and thus, weight loss.

This mechanism resembles how substances such as DNP work. In effect, Fat Away acts similarly to DNP by dissipating the proton gradient in the matrix and increasing metabolic rate, rather than blocking the movement of protons through ATP synthase or reducing the proton gradient in the intermembrane space.

ATP production is a crucial part of cellular respiration and energy generation from food metabolism. The resistance to ATP synthesis forces the body to turn to alternate sources of energy. This often involves the breakdown of fatty acids – a process known as fatty acid oxidation or ß-oxidation – to generate the much-needed ATP. Thus, the overall effect of the drug is a heightened metabolic rate and weight loss due to increased fat oxidation.

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George is experiencing back pain. his doctor tells him the bones attached to his spinal column have become less dense. the doctor is referring to __________. the aging process the settling process the process of physical decline the decline in bone formation

Answers

it could be the lumbar vertebrae, or the sacrum

What are the three main stages of the cell cycle

Answers

Interphase, Mitosis and Cytokinesis

Which of the following occurs in ALL species of living organisms and may lead to an increase in genetic variation?A. Mutations in the genomeB. Crossing-over in meiosisC. Random assortment of chromosomesD. Alternative splicing of mRNA

Answers

Answer:

Mutations in the genome

Mutations in the genome occurs in all species of living organisms and may lead to an increase in genetic variation.

Which disease will happen due to mutation?

The sickle cell anemia will be caused due to the change in the DNA nucleotide sequence has been observed, where adenine has been substituted by the thymine, whose expression has the change in the sequence of the amino acids in β-globin, with valine being incorporated instead of glutamic acid. This constitutes a mutation of the missense type.

Mutations has been characterized by the substitution of one nucleotide by another in the DNA sequence and a point mutation whose consequence has been reflected in the transcription and substitution of one amino acid by another in a protein, whose structure or function will be altered.

The change from glutamic acid to the valine in β-globin causes an altered hemoglobin, giving the abnormal erythrocytes observed in sickle cell disease.

Therefore, Mutations in the genome occurs in all species of living organisms and may lead to an increase in genetic variation.

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Which of the following statements is an accurate combination of postulates 1 and 2 of natural selection?

Heritable variation exists for traits among individuals in a population.
Drug resistance exists among all individuals in a population.
Heritable variation does not exist among individuals in a population.
Environmental variation exists for traits among individuals in a population.

Answers

Answer:

Heritable variation exists for traits among individuals in a population.

Explanation:

According to Darwin's theory of evolution, natural selection is the main evolutionary mechanism. Darwin explains that organisms that have heritable traits that help them survive and reproduce, will be favorable by natural selection. Those favorable traits will enable organism to better adapt to their environment and to pass more genes on to the next generation (offspring).

Organisms adapt to their environment by changing their behavior, structural traits or physiology as a response to environmental change, so that they become well suited to it.

The correct statement combining postulates 1 and 2 of natural selection is that heritable variation exists for traits among individuals in a population. This genetic variance allows for certain traits, like drug resistance, to be selected for and become more common over generations.

The accurate combination of postulates 1 and 2 of natural selection is that heritable variation exists for traits among individuals in a population. Charles Darwin's theory of natural selection is based on the premise that there is genetic variance within species, and these variations are what allow natural selection to act. Because of heritable genetic differences, when the environment changes or when members of a population are exposed to factors such as drugs, those with favorable traits that provide an advantage in those conditions are more likely to survive and reproduce, passing those traits on to their offspring. This natural selection process eventually leads to these favorable traits becoming more common in the population over successive generations, while individuals without these traits are less likely to reproduce, decreasing those traits in the population. Drug resistance, for example, does not exist among all individuals but is a heritable trait found in some individuals that can be selected for in environments with antibiotics present.

Approximately how many deaths occur each year as a result of side effects from medicine

Answers

Answer:

These studies estimate that 6.7% of hospitalized patients have a serious adverse drug reaction with a fatality rate of 0.32%. If these estimates are correct, then there are more than 2,216,000 serious ADRs in hospitalized patients, causing over 106,000 deaths annually.

Explanation:

ADRs in hospitalized patients, causing over 106,000 deaths annually.

Match the vocabulary term with the correct definition. 1. body tissue that is connected to and moves the bones in the body skeletal muscles 2. the ability of a muscle to move a weight repeatedly, or for an extended period of time hypertrophy 3. the increase in the size of a muscle fiber in response to resistance training tendon 4. the most amount of weight a muscle can move at a single time atrophy 5. the decrease in the size and strength of a skeletal muscle when it is not used muscle endurance 6. strong body tissue that connects the muscles to the bones muscle strength

Answers

Answer:

1. body tissue that is connected to and moves the bones in the body skeletal muscles  

2. the ability of a muscle to move a weight repeatedly, or for an extended period of time muscle endurance

3. the increase in the size of a muscle fiber in response to resistance training hypertrophy

4. the most amount of weight a muscle can move at a single time muscle strength

5. the decrease in the size and strength of a skeletal muscle when it is not used atrophy

6. strong body tissue that connects the muscles to the bones tendon

Explanation:

Skeletal muscles are  striated muscle tissue under the voluntary nervous control, responsible for the body movements. Skeletal muscles are connected with the bones via bundles of collagen fibers called tendons.Skeletal muscles have their properties such as:

Muscle endurance or the ability to repeatedly perform force against resistance

Muscle strength the amount of force produced by muscle.

Skeletal muscles can decrease (atrophy) or increase (hypertrophy) in mass. Decrease in mass occurs due to  disease, starvation, age… Increase in mass occurs due to strong training.

Answer:

atrophy is number five

muscle strength is four

muscle endurance is number 2

tendon is 6

skeletal muscles is 1

and hypertrophy is 3.

youre welcome :))

Science Question

if the parent hydra has 32 chromosomes, how many chromosomes does the hydra offspring have?

Answers

Answer:

16 i guess

Explanation:

bcs i think it will bcome half it is called haploid or diploid im not sure the name

Which substance is a mixture of organic matter and weathered rock?

Answers

Soil is a mixture of organic matter and weathered rock. It contains matter such as eroded rocks, decaying matter, and minerals.

Soil is a mixture of organic matter and weathered rock, comprising the weathering of bedrock, as well as organic materials, making it a heterogeneous mixture.

The substance that is a mixture of organic matter and weathered rock is known as soil. Soil is created from the weathering of bedrock, which is the solid rock lying beneath the soil, as well as from organic materials. The lower layer of the soil, which includes the regolith and the saprolite, contains a mix of weathered bedrock, leeched materials, and organic matter. Soil also includes fragments of rocks, like sand, silt, or clay, and chemical precipitates. Since soil is composed of various materials, it is classified as a heterogeneous mixture.

A geneticist studying fruit flies hypothesizes that short wings are a recessive
trait coded for by a single gene. Which observation is most likely to have led
her to form this hypothesis?
F Flies have wing lengths ranging from very long to very short.
G Flies with long wings are less likely to survive.
H Flies with long wings can produce offspring with short wings.
J Flies with short wings prefer to mate with flies with long wings.

Answers

Answer:

H Flies with long wings can produce offspring with short wings.

Explanation:

For example, if we name the gene for the wings length with A, then the fruit flies with short wings have the genotype aa (recessive homozygous), while those with long wings can have either AA (dominant homozygous) or Aa (heterozygous) genotype. So, if two fruit flies with long wings and Aa genotype are crossed:

P: Aa  x  Aa

F1: AA Aa Aa aa

There is a 25% chance that offspring will have short wings.

Mineral X is scratched by a diamond. Mineral X _____.

1. has a Mohs hardness of 10
2. can't be scratched by a penny
3. is softer than a diamond
4. must be a precious metal

Answers

I believe it would be answer choice 1

The temperature of a body of water influences

Answers

It affects the aquatic life - the organisms that live in the water might not be able to survive changes in temperature

A scientist looks at two different cells under a microscope. Cell A has many more ribosomes than cell B. What can the scientist conclude about the cells? A. Cell A makes more proteins than cell B. B. Cell B makes more proteins than cell A. C. Cell A and cell B make the same proteins.

Answers

A scientist looks at two different cells under a microscope. Cell A has many more ribosomes than cell B. What can the scientist conclude about the cells?

A. Cell A makes more proteins than cell B. B. Cell B makes more proteins than cell A. C. Cell A and cell B make the same proteins.

this is because ribosomes are responsible for the synthesis, or production, of proteins.

Final answer:

Cell A produces more proteins than Cell B due to the greater number of ribosomes present. Ribosomes are the sites of protein synthesis in cells, and their abundance is indicative of the cell's protein production capacity. This structural feature of cells, along with DNA and cell membranes, provides evidence for common ancestry among different life forms.

Explanation:

If a scientist observes that Cell A has many more ribosomes than Cell B, it can be concluded that Cell A makes more proteins than Cell B. This is because ribosomes are structures in the cytoplasm where proteins are made. The more ribosomes a cell has, the greater its capacity for protein synthesis. Cell B, having fewer ribosomes, would be expected to make fewer proteins compared to Cell A.

DNA in cells contains the genetic instructions required for making proteins. The presence of ribosomes across different types of cells, such as bacteria and human cells, suggests a common ancestry since these structures are essential for protein production, which is a fundamental process in all living cells.

Additional Features Indicating Common Ancestry

Both eukaryotic and prokaryotic cells have DNA as their genetic material.The basic mechanisms of DNA replication and protein synthesis are conserved across different forms of life.Cell membranes composed of phospholipid bilayers are another common feature shared by all cells.

Which layer of the gi tract participates in chemical digestion and absorption?

Answers

Answer:

The mucosa

Explanation:

The mucosa is the innermost layer of the GI tract and it has two main functions: Secretion and absorption.

The mucosa comes into contact (directly) to chyme, so the mucosa has goblet cells, which are specialized cells, that secrete a protective lining of mucus throughout the GI tract to protect it from harm. It is in the epithelium layer of the mucosa where the most absorption occurs.

Why is it more difficult to identify eukaryotic genes than prokaryotic genes using genomic techniques?

Answers

Answer:

Because eukaryotic genes contain introns

Explanation:

Eukaryotic genes are much more complex than prokaryotic genes. Some of the differences between these two groups of organisms are:

existence of exons and introns (which are spliced during the process of mRNA processing)post-transcriptional modifications (poly A tail and 5' cap)regulatory elements which control gene expression.

On the other hand, prokaryotic genes are organized in operons, structural units that contain more that one gene, under the control of one promotor.

Eukaryotic gene expression is more complex due to physical separation of transcription and translation, epigenetic regulation, and larger genomes.

Eukaryotic gene expression is more complex than prokaryotic gene expression because the processes of transcription and translation are physically separated within the eukaryotic cell. Eukaryotic cells can regulate gene expression at multiple levels, beginning with control of access to DNA through epigenetic regulation. This complexity is further enhanced by the larger genomes, alternative splicing of mRNAs, and chromatin wrapping in eukaryotes.

Climate does not effect the rate in which weathering can occur. Please select the best answer from the choices provided T F

Answers

Answer:

true

Explanation:

it does effect it with it being to hot or to cold

Answer:

False

Explanation:

Climate has a major role in escalating the rate of weathering. During excessive hot season, the large rock pieces in dry and arid areas develop cracks which further increases in size when rain falls on it or strong air strikes against it.

During humid and cold climatic condition, fissures are developed into rocks due to cyclic freezing and thawing process.

Hence, given statement is false.

Which phylum of fungi consists of decomposers that utilize flagellated spores? A. Chytridomycota B. Ascomycota C. Zygomycota D. Basidiomycota

Answers

Answer:

A. Chytridomycota

Explanation:

They are the most primitive true fungi and they produce zoospores that have a flagellum. Chytridomycota are usually aquatic but some species thrive on land. Most of them are unicellular and have commonalities with protist/s in terms of their habitat and structure of the cell.

A principal problem with inserting an unmodified mammalian gene into a plasmid and then getting that gene expressed in bacteria is that _____.

A) prokaryotes use a different genetic code from that of eukaryotes
B) bacteria translate only mRNAs that have multiple messages
C) bacteria cannot remove eukaryotic introns
D) bacterial RNA polymerase cannot make RNA complementary to mammalian DNA

Answers

C) bacteria cannot remove eukaryotic introns

Answer:

C) bacteria cannot remove eukaryotic introns

Explanation:

Because of that, before inserting eukaryotic DNA in prokaryotic cell, it is required to process it.

Cloning of DNA is a process used in molecular biology to replicate DNA fragments of interest. Enzymes required for this process are restriction enzymes which cut both, DNA of interest and bacterial plasmid that is used as vector and DNA ligases which fragment into plasmid. Recombinant plasmid is inserted into bacteria via transformation.

A mother rabbit gives birth to several offspring, which are all very similar in appearance. Each of the offspring is taken to a different location. A year later, the offspring are compared. They are all different sizes, with slight differences in the color of their fur and drastic differences in their personalities. Which statement best explains why the offspring, who inherited similar genes from their parents, are so different?

Answers

because they were all brought up in different environments
Final answer:

The difference in characteristics among the offspring, despite inheriting similar genes from their parents, is best explained by the fact that offspring vary in regard to their characteristics.

Explanation:

The statement that best explains why the offspring, who inherited similar genes from their parents, are so different is that offspring vary among each other in regard to their characteristics.



This variation can be due to a combination of genetic and environmental factors. While offspring inherit genes from both parents, they may receive different combinations of those genes, leading to variations in physical traits such as size and fur color. Additionally, environmental factors, such as diet, exercise, and social interactions, can also influence an individual's personality, resulting in drastic differences among the offspring.



SEO Keywords: offspring characteristics, genetic variation, environmental influence, inherited traits, physical traits, personality differences.

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