Sources of genetic variation Quiz
Studying this course? Keep your progress in one place.
Pick an answer for each. Quizzes never use energy.
5 questions, one answer each
Each answer is checked as you go, with why.
See all 5 questions
1. Which process produces a new allele?
- A. Crossing over
- B. Independent assortment
- C. Mutation
- D. Random fertilisation
2. A species has 2n = 12. Ignoring crossing over, how many chromosome combinations can its gametes have?
- A. 12
- B. 64
- C. 144
- D. 6
3. What are the sites of crossing over called?
- A. Centromeres
- B. Chiasmata
- C. Spindle fibres
- D. Nucleoli
4. Which statement describes random fertilisation?
- A. The same gametes always fuse
- B. Any male gamete can fuse with any female gamete
- C. Fusion only occurs between gametes with the same alleles
- D. Fusion creates new alleles
5. A mutation occurs in a skin cell of a person. Why is it not passed on to their children?
- A. Skin cells cannot mutate
- B. It is not in a cell that forms gametes
- C. Mutations are always repaired
- D. Meiosis removes it