Question

metaphase I. 2. State 3 ways in which variation of offspring is achieved in sexual reproduction. (3 pts) Canntin unristinn nan he canced hv mutation Bv random mating and random fertilization,

Answer 1

Variation can be achieved in sexual reproduction in many ways like..

1) crossing over. I meiosis cell division , non sister chromatid can change their DNA strand which makes recombinant gametes .

2)random orientation- when homologue chromosomes allign in metaphase plate , their orientation towards opposite pole is random which can give different maternal and paternal gene randomly.

3) random fertilization- as various gametes are produced by meiosis , so fusion between various gametes can form different zygote which make different offspring.

Thank you