EVERYDAY SCIENCE

Detailed explanation-1: -Men determine the sex of a baby depending on whether their sperm is carrying an X or Y chromosome. An X chromosome combines with the mother’s X chromosome to make a baby girl (XX) and a Y chromosome will combine with the mother’s to make a boy (XY).

Detailed explanation-2: -Two of the chromosomes (the X and the Y chromosome) determine your sex as male or female when you are born. They are called sex chromosomes: Females have 2 X chromosomes. Males have 1 X and 1 Y chromosome.

Detailed explanation-3: -Usually, a female baby has 2 X chromosomes (XX) and a male has 1 X and 1 Y (XY). But in Klinefelter syndrome, a boy is born with an extra copy of the X chromosome (XXY). The X chromosome is not a “female” chromosome and is present in everyone. The presence of a Y chromosome denotes male sex.

Detailed explanation-4: -The genetic composition of the male is 22 autosomes and XY as 23rd pair of chromosome while a female has 22 autosomes and XX as 23rd pair of chromosome. A healthy human has 23 pairs of chromosomes.

Detailed explanation-5: -While women do inherit 50% of their DNA from each parent, men inherit about 51% from their mother and only 49% from their father.