Question

Most heritable differences are due to A. point mutations that occur during mitosis. B. the insertion of incorrect sequences of DNA by faulty polymerases. C. the inability to form proper DNA sequences due to poor nutrition. D. gene shuffling that occurs during the production of gametes.

Answer 1

gene shuffling for sure

Answer 2

D. gene shuffling that occurs during the production of gametes.

Step-by-step explanation:

Crossing over is the process of exchange of genetic material between non sister chromatids of homologous chromosomes. It occurs during prophase I of meiosis and imparts genetic variations to the daughter cells. Since gamete formation in sexually reproducing organisms occurs through meiosis, crossing over forms new gene combinations in gametes.