Question

part b
meiosis is key to genetic differences within a gene pool that helps to drive natural selection. consider the processes involved in meiosis and sexual reproduction. excluding mutations, which of these does not contribute to genetic differences in a sexually reproducing population?
a crossing over
b fertilization
c dna replication
d random assortment

Explanation:

Crossing - over exchanges genetic material between homologous chromosomes. Fertilization combines genetic material from two parents. Random assortment of chromosomes during meiosis creates different combinations of parental chromosomes. DNA replication is a process that duplicates DNA accurately before cell division and, excluding mutations, does not introduce new genetic differences in the sense of creating new combinations of alleles in the population for sexual reproduction. It just ensures each new cell gets a complete set of DNA.

Answer:

C. DNA replication