Question

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

Answer 1

Hint: In human beings, the equal genetic contribution of male and female parents are ensured in the progeny. This is done through the inheritance of an equal number of chromosomes from both parents.

Complete answer:There are 23 pairs of chromosomes present in the nucleus of human beings. All human beings’ possess 23 pairs that are autosomes and 1 pair of sex chromosomes.
X and Y are the two sex chromosomes in humans. Females have XX chromosomes and males have XY chromosomes.
During the course of reproduction, as the fertilization process takes place, the male gamete fuses with the female gametes resulting in the formation of the diploid zygote.
Zygote receives an equal amount of genetic material from each parent and thus, retains the diploid nature after fertilization.

Additional information:
Chromosomes are thread-like structures located inside the nucleus of animal and plant cells. The human chromosome is the basic building block of life and is one of the most important components of the cell to be transmitted from generation to generation. Chromosomes help ensure that DNA is replicated and distributed appropriately during cell division.
In human beings, the equal genetic contribution of male and female parents is ensured in the progeny through the inheritance of an equal number of chromosomes within a cell contains 46 chromosomes or 23 sets. These chromosomes can be X or Y and constitute different sets depending on whether it is a man or woman. A woman has two X chromosomes and a man has one X chromosome and one Y chromosome are the same in all races.

Note:in human, 46 chromosomes are arranged in 23 pairs, including 22 pairs of chromosomes called auto-some. Thus, each chromosome pair consists of one chromosome inherited from the mother and one from the father.