3. Genetics

Genetic Variation — Quiz

Test your understanding of genetic variation with 5 practice questions.

Practice Questions

Question 1

Which of the following describes a mutation that results in a change in the amino acid sequence, but the new amino acid has similar biochemical properties to the original, leading to little or no change in protein function?

Question 2

Consider a population of flowering plants where flower color is determined by a single gene with two alleles: R (red, dominant) and r (white, recessive). If the frequency of the recessive allele (r) is $q = 0.4$, and the population is in Hardy-Weinberg equilibrium, what is the expected frequency of heterozygous individuals (Rr)?

Question 3

Which of the following mechanisms of genetic variation involves the movement of alleles between populations, potentially reducing genetic differences between them?

Question 4

A population of deer lives in a stable forest environment. A sudden, severe drought drastically reduces the available vegetation, leading to a significant decrease in the deer population size. The surviving deer happen to have a higher proportion of alleles for drought resistance than the original population. This change in allele frequency is an example of:

Question 5

Which of the following is the most direct consequence of crossing over during meiosis I?