Provide a brief answer for the given question:
How is the equal genetic contribution of male and female parents ensured in the progeny?
a. The zygote maintains its diploid nature because it receives anset of chromosomes from each parent.
b. Out of 23 pairs of chromosomes, humans have
.
c. Which combination of sex chromosomes is found in a normal human female?.
d. During fertilisation, a haploid sperm fuses with a haploid ovum to form a.