Question

How does random fertilization add to genetic variation?
a-reshuffling of randomly picked up chromosomes
b-random fusion of genetically unique gametes
c-exchange of genetic material between homologous chromosomes

Answer 1

@JayBaybie

Answer 2

B) random fusion of genetically unique gametes.

You can rule out "randomly picked up chromosomes. " because this is not a normal part of reproduction. The genome remains relatively constant at 23 pairs of chromosomes.

Any "exchange of genetic material between homologous chromosomes.." would have no effect since they are homologous in sequence. It is the crossover in meiosis or random assortment of heterozygous chromosomes in merging unrelated gametes that increases genetic variation in the gene pool.

Answer 3

thx