Question

mention two main causes of variation during reproduction ​

Answer 1

Explanation:

Genetic variation is caused by:

mutation.

random mating between organisms.

random fertilization.

crossing over (or recombination) between chromatids of homologous chromosomes during meiosis.

Answer 2

Answer:

mutation.

random mating between organisms.

random fertilization.

crossing over (or recombination) between chromatids of homologous chromosomes during meiosis.