The diagram shows chromosomal crossover.

Question

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.

Answer 1

The correct answer is:

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

Crossing over during meiosis allows for the exchange of genetic material between homologous chromosomes, leading to new combinations of alleles. This genetic recombination increases genetic diversity in the offspring, resulting in more variation in traits.