Question

How is the equal genetic contribution of male and female parents ensured in the progeny ?​

Answer 1

Answer:

Equal genetic contribution in male and female parents in the progeny is ensured by the equal inheritance of chromosome of each parent. Human possesses 23 pair of chromosome, of which 22 pair are autosomes and 1 pair is the sex chromosome. The two sex chromosome in human are x and y. Female have 2x chromosome and males have x and y chromosome. During the process of fertilisation a haploid sperm fuses with a heploid ovum to produce a diploid zygote . Zygote receives equal amount of genetic material from each parent and thus, retains the diploid nature of fertilization