Question Detail
Question
How many centromeres would you expect in 4 bivalents? a. 2 b. 16 c. 4 d. 8
Correct Answer
Option D is the correct answer.
Detailed Explanation
A bivalent consists of two homologous chromosomes. Each chromosome has one centromere (even though it has two chromatids). Therefore, one bivalent contains 2 centromeres. For 4 bivalents, the number of centromeres is 4 x 2 = 8.
Hint
Count the chromosomes, not the chromatids. Each chromosome has one centromere.