Question

How does the process shown in the model result in genetic variation?

O A. Chromatids swap corresponding portions of DNA during an
exchange called crossing over.
B. Chromosomes align at random so that each gamete receives a
unique combination of chromosomes.
C. Chromatids replicate certain portions of their DNA so that some
daughter cells receive multiple copies.
OD. Gametes from each parent combine so that the zygote receives a
unique combination of genes.

Answer 1

Answer: C. Chromatids swap corresponding portions of DNA during an exchange called crossing over.

Explanation:The process shown in the image is meiosis, a type of cell division that produces gametes (sex cells). During meiosis, homologous chromosomes (chromosomes that are similar in size, shape, and gene content) pair up and exchange DNA segments. This process, called crossing over, results in new combinations of genes in the daughter cells.

Answer 2

Answer: C. Chromatids swap corresponding portions of DNA during an exchange called crossing over.

Explanation:The process shown in the image is meiosis, a type of cell division that produces gametes (sex cells). During meiosis, homologous chromosomes (chromosomes that are similar in size, shape, and gene content) pair up and exchange DNA segments. This process, called crossing over, results in new combinations of genes in the daughter cells.