How does random fertilization affect genetic variation?

How does random fertilization affect genetic variation?

Crossing-over, the independent assortment of chromosomes during anaphase I, and random fertilization all increase the genetic variation of a species.

How does random fertilization create genetic diversity?

Random fertilization refers to the fact that if two individuals mate, and each is capable of producing over 8million potential gametes, the random chance of any one sperm and egg coming together is a product of these two probabilities – some 70 trillion different combinations of chromosomes in a potential offspring.

How does Fertilisation causes variation within a species?

Genetic variation is increased by meiosis During fertilisation, 1 gamete from each parent combines to form a zygote. Because of recombination and independent assortment in meiosis, each gamete contains a different set of DNA. This produces a unique combination of genes in the resulting zygote.

Which type of reproduction is responsible for genetic variation?

Sexual reproduction Sexual reproduction has the potential to produce tremendous genetic variation in offspring. This variation is due to independent assortment and crossing-over during meiosis, and random union of gametes during fertilization.