Population Genetics of Animal mcqs January 8, 2026April 9, 2024 by u930973931_answers 20 min Score: 0 Attempted: 0/20 Subscribe 1. What does population genetics study? (A) Individual organisms (B) Evolutionary history (C) Genetic variation within populations (D) Animal behavior 2. What is an allele? (A) A specific gene variant (B) A unit of genetic material (C) An individual organism (D) A group of related genes 3. Which of the following is NOT a mechanism of evolution? (A) Natural selection (B) Genetic drift (C) Gene flow (D) Artificial selection 4. What is gene flow? (A) The movement of genes between populations (B) The exchange of genetic material within a population (C) The movement of individuals between populations (D) The introduction of new alleles through mutation 5. What effect does genetic drift have on genetic variation within a population? (A) It increases genetic variation (B) It depends on population size (C) It has no effect (D) It decreases genetic variation 6. What is the Hardy-Weinberg equilibrium used for? (A) To predict future evolutionary changes (B) To calculate gene flow (C) To determine if a population is evolving (D) To estimate population size 7. Which of the following is an assumption of the Hardy-Weinberg equilibrium? (A) Genetic drift is significant (B) Gene flow is present (C) Mutation is absent (D) Natural selection is acting 8. What is genetic bottleneck? (A) A type of natural selection (B) Movement of individuals between populations (C) Introduction of new alleles through mutation (D) Loss of genetic variation when population size is reduced 9. Which of the following is an example of genetic drift? (A) A new mutation arises (B) A group migrates to a new area (C) Random deaths before reproduction (D) Environment change favors certain traits 10. What is the founder effect? (A) A type of natural selection (B) Movement of individuals (C) Introduction of new alleles (D) Loss of variation when a new population is founded by few individuals 11. What is genetic variation? (A) Presence of different species (B) Range of physical traits (C) Diversity of alleles and genotypes (D) Movement of genes 12. In rabbits, if allele B = 0.6, what is the frequency of b? (A) 0.6 (B) 0.2 (C) 0.4 (D) 0.8 13. Which factor increases genetic variation? (A) Genetic drift (B) Natural selection (C) Mutation (D) Gene flow 14. What is genetic equilibrium? (A) Constant allele frequencies (B) Sudden allele frequency change (C) Movement of genes (D) A type of drift 15. If recessive allele b = 0.3, what is BB frequency? (A) 0.09 (B) 0.21 (C) 0.81 (D) 0.49 16. Which is an example of gene flow? (A) Birds migrate to a new habitat (B) Genetic bottleneck (C) Mutation in insects (D) Artificial selection 17. What is the allele frequency formula? (A) p² + 2pq + q² = 1 (B) p + q = 1 (C) p = f(B) (D) q = f(b) 18. Which is NOT a mechanism of microevolution? (A) Natural selection (B) Mutation (C) Gene flow (D) Genetic drift 19. Relation between drift and population size? (A) More significant in large populations (B) Increases population size (C) Independent of size (D) More significant in small populations 20. What is a selective sweep? (A) Loss of variation due to reduced population size (B) Movement of individuals (C) Rapid spread of beneficial allele (D) Random deaths