Molecular Evolution and Population Genetics Quiz

Play an AI-generated podcast conversation about this lesson

What is the primary source of genetic variation in populations according to the passage?

Mutation (correct)

Migration

Recombination

Random genetic drift

How does the passage describe the effect of selection on the frequency of a favored dominant allele?

The frequency is not affected by selection

The frequency changes slowly if the allele is rare

The frequency changes rapidly

The frequency changes slowly if the allele is common (correct)

What is the main consequence of heterozygote superiority according to the passage?

The favored allele is maintained at high frequencies in the population (correct)

The favored allele is quickly eliminated from the population

The favored allele has no effect on the fitness of the organism

The favored allele is only expressed in heterozygous individuals

How does the passage describe the effect of migration on allele frequencies in a population?

Migration causes allele frequencies to be the weighted average of the two populations Signup and view all the answers

According to the passage, what is the primary factor that prevents the elimination of harmful mutations from a population?

Mutation Signup and view all the answers

Which of the following is NOT mentioned in the passage as a key process in population genetics?

Genetic engineering Signup and view all the answers

Which of the following is a key ancestral process that shapes genetic variation?

All of the above Signup and view all the answers

What is the effect of genetic drift on allele frequencies over generations?

It decreases diversity by making individuals more genetically similar Signup and view all the answers

How does genetic drift affect linkage disequilibrium (LD) between alleles?

It increases LD by creating correlations between alleles Signup and view all the answers

What is the effect of genetic drift on heterozygosity in a population?

It decreases heterozygosity by reducing the frequency of heterozygotes Signup and view all the answers

How does population size affect the rate of genetic drift?

Drift acts faster in smaller populations Signup and view all the answers

Which of the following statements about genetic drift is true?

It is the only process that can lead to the fixation or loss of alleles Signup and view all the answers

Which of the following is NOT one of the conditions required for the Hardy-Weinberg principle to hold true?

Genetic drift is occurring in the population Signup and view all the answers

Huntington's disease is an example of which type of genetic disorder?

Single-locus disorder Signup and view all the answers

What is the primary cause of genetic variation within a population?

Mutation Signup and view all the answers

In the Hardy-Weinberg principle, what does the letter 'p' represent?

The frequency of the dominant allele Signup and view all the answers

Which of the following is NOT a consequence of violating the Hardy-Weinberg assumptions?

The population size will decrease Signup and view all the answers

What is the term used to describe the mating of individuals that are more closely related than expected by chance?

Inbreeding Signup and view all the answers

In a population with two alleles, A and a, what is the frequency of heterozygous individuals (Aa) if the frequency of the dominant allele (A) is 0.6?

0.48 Signup and view all the answers

Which of the following population genetic models assumes that populations are infinitely large and that migration, mutation, and selection do not occur?

Hardy-Weinberg model Signup and view all the answers

What is the process by which new genetic combinations are generated through the exchange of genetic material between homologous chromosomes during meiosis?

Recombination Signup and view all the answers

Which of the following is NOT a force that can cause changes in allele frequencies within a population?

Meiosis Signup and view all the answers