AP BIOLOGY

Detailed explanation-1: -Sexual reproduction gives rise to more viable variation than asexual reproduction. It is because there is an inbuilt tendency to variation during reproduction, both because of errors in DNA copying, and modes of sexual reproduction.

Detailed explanation-2: -The three main sources of genetic variation arising from sexual reproduction are: Crossing over (in prophase I) Random assortment of chromosomes (in metaphase I) Random fusion of gametes from different parents.

Detailed explanation-3: -To get diversity in individuals, genetic differences are required, and different phenotypes must be expressed. Since sexual reproduction is more conducive to driving evolution than asexual reproduction, much more genetic diversity is available for natural selection to work on.

Detailed explanation-4: -Sexual reproduction is typically advantageous over asexual reproduction because the environment is constantly changing. Sexual reproduction allows new combinations of genes to form. This greater genetic diversity increases the phenotypic variation: that is, it increases the physical variety of the organisms.

Detailed explanation-5: -Asexual species, on the other hand, do not have genetic variability like we do-each of their offspring has the exact same genetic makeup as their parent.