Biology

Genetics and Evolutionary Biology

1,156 Questions

Genetics and evolutionary biology explain how traits are passed from parents to offspring and how species change over time. Key concepts include genetic drift, inbreeding, and heredity. This topic is fundamental for the biology section of many competitive tests.

Heredity and traitsGenetic variations and driftInbreeding conceptsEvolutionary mechanisms

Genetics and Evolutionary Biology Questions

Multiple choice

What is the term used to describe the proportion of phenotypic variance in a population that is due to environmental variation?

  1. Heritability

  2. Gene Action

  3. Epistasis

  4. Linkage
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Correct answer
Explanation

Environmental Heritability is the proportion of phenotypic variance in a population that is due to environmental variation.

Multiple choice

What is the term used to describe the genetic variance in a population that is due to additive gene effects?

  1. Heritability

  2. Gene Action

  3. Epistasis

  4. Linkage
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Correct answer
Explanation

Additive Genetic Variance is the genetic variance in a population that is due to additive gene effects.

Multiple choice

What is the term used to describe the genetic variance in a population that is due to non-additive gene effects?

  1. Heritability

  2. Gene Action

  3. Epistasis

  4. Linkage
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Correct answer
Explanation

Non-Additive Genetic Variance is the genetic variance in a population that is due to non-additive gene effects.

Multiple choice

What is the term used to describe the genetic variance in a population that is due to dominance gene effects?

  1. Heritability

  2. Gene Action

  3. Epistasis

  4. Linkage
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Correct answer
Explanation

Dominance Genetic Variance is the genetic variance in a population that is due to dominance gene effects.

Multiple choice

What is the term used to describe the genetic variance in a population that is due to interaction between genes?

  1. Heritability

  2. Gene Action

  3. Epistasis

  4. Linkage
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Correct answer
Explanation

Interaction Genetic Variance is the genetic variance in a population that is due to interaction between genes.

Multiple choice

What is the term used to describe the genetic variance in a population that is due to linkage between genes?

  1. Heritability

  2. Gene Action

  3. Epistasis

  4. Linkage
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Correct answer
Explanation

Linkage Genetic Variance is the genetic variance in a population that is due to linkage between genes.

Multiple choice

What is the term used to describe the genetic variance in a population that is due to maternal effects?

  1. Heritability

  2. Gene Action

  3. Epistasis

  4. Linkage
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Correct answer
Explanation

Maternal Genetic Variance is the genetic variance in a population that is due to maternal effects.

Multiple choice

What is the term used to describe the genetic variance in a population that is due to paternal effects?

  1. Heritability

  2. Gene Action

  3. Epistasis

  4. Linkage
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Correct answer
Explanation

Paternal Genetic Variance is the genetic variance in a population that is due to paternal effects.

Multiple choice

Which of the following is NOT a type of genetic variation in microorganisms?

  1. Mutation

  2. Recombination

  3. Gene transfer

  4. Epigenetics
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Epigenetics is not a type of genetic variation in microorganisms. It refers to changes in gene expression that do not involve changes in the DNA sequence.

Multiple choice

What is the process by which a microorganism changes its genetic material in response to environmental conditions?

  1. Mutation

  2. Recombination

  3. Gene transfer

  4. Epigenetics
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A Correct answer
Explanation

Mutation is the process by which a microorganism changes its genetic material in response to environmental conditions. Mutations can be caused by a variety of factors, such as exposure to radiation or chemicals.

Multiple choice

What is the term for a change in gene expression that does not involve changes in the DNA sequence?

  1. Mutation

  2. Recombination

  3. Gene transfer

  4. Epigenetics
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Epigenetics is the term for a change in gene expression that does not involve changes in the DNA sequence. This can occur through a variety of mechanisms, such as DNA methylation and histone modification.

Multiple choice

What is the term for the process by which a microorganism changes its genetic material in response to environmental conditions?

  1. Mutation

  2. Recombination

  3. Gene transfer

  4. Epigenetics
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Mutation is the term for the process by which a microorganism changes its genetic material in response to environmental conditions. Mutations can be caused by a variety of factors, such as exposure to radiation or chemicals.

Multiple choice

What is the study of the distribution of genetic variation across a geographic area called?

  1. Phylogeography

  2. Population Genetics

  3. Genetic Variation

  4. Evolution
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A Correct answer
Explanation

Phylogeography is the study of the distribution of genetic variation across a geographic area, and how this variation is influenced by historical and contemporary processes.

Multiple choice

What is the term for the presence of differences in DNA sequences between individuals of a species?

  1. Genetic Variation

  2. Population Genetics

  3. Phylogeography

  4. Evolution
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A Correct answer
Explanation

Genetic variation is the presence of differences in DNA sequences between individuals of a species.

Multiple choice

What is the name of the process by which genetic variation is reduced in a population?

  1. Genetic Drift

  2. Natural Selection

  3. Mutation

  4. Gene Flow
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Genetic drift is the process by which genetic variation is reduced in a population due to random sampling.