Question

How is the equal genetic contribution of male and female parents insert in the progeny

Answer 1

the body of human consist of 22 pair of chromosomes and XY in male ,XX in female .

for the genetic contribution of male and female for the progeny is that the baby gets 22 hormones from male parent and 22 hormones from female parent and the sex of the the progeny depends on the male parent .

hope it will be helpful

Answer 2

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

During the formation of gametes as a result of reductional division (meiosis), sperms - XY & eggs - XX receive only single genome of a parent.

When fertilization occurs, one genome each from sperm & egg reaches the zygote.

It means both male & female parents contribute exactly equal amount of genetic material to the offspring.