The diagram shows chromosomal crossover.

How does this crossing over of chromosomes affect the traits of offspring?

A.
It causes more similarity in the traits of offspring.

B.
It causes more variation in the traits of offspring.

C.
It causes more mutations in the traits of offspring.

D.
It causes more dominance in the traits of offspring.

1 answer

The correct answer is:

B. It causes more variation in the traits of offspring.

Chromosomal crossover during meiosis allows for the exchange of genetic material between homologous chromosomes, which leads to new combinations of alleles. This increased genetic variation contributes to the diversity of traits observed in the offspring.