Question

question 2 of 10
which statement best explains how fertilization results in genetic variation?
a. because the egg and sperm cells are so different, their combination during fertilization results in a completely new kind of cell.
b. each gamete has a different number of chromosomes, so the resulting zygote could have any number of chromosomes.
c. gametes from different types of organisms are able to combine, resulting in infinite possible genetic combinations.
d. each gamete contains a different set of genes, so when gametes combine, the zygote has a unique set of dna.

Explanation:

Gametes are haploid and have unique gene - sets. Fertilization combines these to form a zygote with unique DNA, leading to genetic variation.

Answer:

D. Each gamete contains a different set of genes, so when gametes combine, the zygote has a unique set of DNA.