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
What is the term used to describe the management of wildlife populations to maintain genetic diversity?
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Genetic management
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Population genetics
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Conservation genetics
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Selective breeding
A
Correct answer
Explanation
Genetic management involves managing wildlife populations to maintain genetic diversity and prevent inbreeding.
What is the study of genetic variation within and between populations of organisms?
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Population genetics
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Molecular ecology
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Evolutionary biology
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Genomics
B
Correct answer
Explanation
Molecular ecology is the study of genetic variation within and between populations of organisms, and how this variation is influenced by ecological factors.
Which molecular marker is commonly used to study genetic variation in natural populations?
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Microsatellites
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Single nucleotide polymorphisms (SNPs)
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Restriction fragment length polymorphisms (RFLPs)
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Amplified fragment length polymorphisms (AFLPs)
A
Correct answer
Explanation
Microsatellites, also known as simple sequence repeats (SSRs), are short, repetitive DNA sequences that are highly polymorphic and widely distributed throughout the genome. They are commonly used to study genetic variation in natural populations because they are easy to amplify and analyze.
What is the effect of gene flow on genetic variation within a population?
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It increases genetic variation
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It decreases genetic variation
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It has no effect on genetic variation
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It depends on the direction of gene flow
A
Correct answer
Explanation
Gene flow increases genetic variation within a population by introducing new alleles from other populations. This can help to maintain genetic diversity and reduce the risk of inbreeding.
What is the term used to describe the genetic differentiation between populations?
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Genetic distance
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Genetic divergence
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F-statistics
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All of the above
D
Correct answer
Explanation
Genetic distance, genetic divergence, and F-statistics are all terms used to describe the genetic differentiation between populations. Genetic distance is a measure of the overall genetic difference between two populations, while genetic divergence is a measure of the difference in allele frequencies between two populations. F-statistics are a set of statistics that measure the amount of genetic differentiation between populations.
What is the effect of genetic drift on genetic variation within a population?
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It increases genetic variation
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It decreases genetic variation
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It has no effect on genetic variation
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It depends on the size of the population
B
Correct answer
Explanation
Genetic drift is the random change in allele frequencies in a population over time. It can lead to a decrease in genetic variation, especially in small populations, where the effects of random chance are more pronounced.
What is the term used to describe the process by which natural selection acts on genetic variation?
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Adaptation
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Evolution
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Natural selection
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All of the above
D
Correct answer
Explanation
Adaptation, evolution, and natural selection are all terms used to describe the process by which natural selection acts on genetic variation. Adaptation is the process by which a population becomes better suited to its environment, evolution is the change in the genetic composition of a population over time, and natural selection is the process by which individuals with favorable traits are more likely to survive and reproduce.
What is the term used to describe the study of the genetic structure of populations?
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Population genetics
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Molecular ecology
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Evolutionary biology
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Genomics
A
Correct answer
Explanation
Population genetics is the study of the genetic structure of populations, including the distribution of genetic variation within and between populations. It is a subfield of molecular ecology that focuses on the genetic basis of evolutionary processes.
What is the term used to describe the study of the genetic diversity of species?
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Population genetics
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Molecular ecology
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Evolutionary biology
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Genomics
D
Correct answer
Explanation
Genomics is the study of the genetic diversity of species, including the structure, function, and evolution of genomes. It is a broad field that encompasses molecular ecology, population genetics, and evolutionary biology.
What is the term used to describe the study of the genetic basis of adaptation?
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Population genetics
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Molecular ecology
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Evolutionary biology
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Genomics
C
Correct answer
Explanation
Evolutionary biology is the study of the genetic basis of adaptation, including the mechanisms by which genetic variation is generated, maintained, and acted upon by natural selection. It is a broad field that encompasses molecular ecology, population genetics, and genomics.
What is the term used to describe the study of the genetic basis of behavior?
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Population genetics
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Molecular ecology
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Evolutionary biology
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Behavioral genetics
D
Correct answer
Explanation
Behavioral genetics is the study of the genetic basis of behavior, including the role of genes in shaping individual differences in behavior. It is a subfield of molecular ecology that focuses on the genetic basis of complex traits.
What is the term used to describe the study of the genetic basis of disease?
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Population genetics
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Molecular ecology
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Evolutionary biology
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Medical genetics
D
Correct answer
Explanation
Medical genetics is the study of the genetic basis of disease, including the role of genes in causing and treating diseases. It is a subfield of molecular ecology that focuses on the genetic basis of human health and disease.
What is the term used to describe the study of the genetic basis of aging?
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Population genetics
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Molecular ecology
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Evolutionary biology
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Gerontology
D
Correct answer
Explanation
Gerontology is the study of the genetic basis of aging, including the role of genes in shaping the aging process. It is a subfield of molecular ecology that focuses on the genetic basis of senescence.
What is the term used to describe the study of the genetic basis of development?
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Population genetics
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Molecular ecology
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Evolutionary biology
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Developmental biology
D
Correct answer
Explanation
Developmental biology is the study of the genetic basis of development, including the role of genes in shaping the development of organisms from embryos to adults. It is a subfield of molecular ecology that focuses on the genetic basis of morphogenesis.
Which evolutionary theory proposes that individuals select mates who possess traits that are rare in their population?
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Negative Frequency-Dependent Selection
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Positive Frequency-Dependent Selection
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Assortative Mating
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Disassortative Mating
A
Correct answer
Explanation
Negative frequency-dependent selection proposes that individuals select mates who possess traits that are rare in their population, as these traits are likely to be more beneficial and less likely to be shared by competitors.