Which explains how genetic variation occurs by way of sexual reproduction? 1)The union of sperm and egg occurs during meiosis.
2)Half of each chromosome pair comes from each parent
3)Sexual Reproduction does not produce variation
4)Meiosis occurs in all body cells also.

answer; /// i believe that the correct answer is (50%);

•there must be variation for the particular trait within a population.

•the variation must be inheritable (that is, it must be capable of being passed on from the parents to their offspring).

•individuals with one version of the trait must produce more offspring than those with a different version of the trait.good

explanation:

examples of nucleic acids are deoxyribonucleic acid (dna) and ribonucleic acid (rna).