Question

During recombination:

a.) sister chromatids undergo crossing-over with each other.

b.) the synaptonemal complex keeps the sister chromatids together until anaphase II.

c.) one crossover event occurs for each pair of human chromosomes.

d.) chiasmata hold chromosomes together

Answer 1

During recombination, crossing over event occurs between two non-sister chromatids of the two homologous chromosomes. For each pair of chromosomes, one cross-over event is required.

Hence, option (c) is correct.