Question

Which sentence describes how crossing over increases genetic variation?

OA. It combines gametes from different individuals.
OB. It increases the number of possible chromosome combinations
that can occur in offspring.
OC. It increases the number of possible allele combinations that can
occur on a single chromosome.
OD. It increases the number of genes in a chromosome that can be
inherited.

Answer 1

Crossing over during meiosis increases genetic variation by creating new combinations of alleles on chromosomes.

Step-by-step explanation:

How crossing over increases genetic variation:

Crossing over is a process that occurs during meiosis, the cell division process that produces gametes. It involves the exchange of genetic material between homologous chromosomes. This exchange leads to the formation of new combinations of alleles on chromosomes, thereby increasing genetic variation.

By crossing over, the number of possible chromosome combinations that can occur in offspring increases, as different combinations of alleles can now be present on a single chromosome. This allows for more diverse genetic combinations in the offspring.

Learn more about Crossing over and genetic variation