PATHOLOGY

Detailed explanation-1: -Every egg has an X sex chromosome; a sperm can have either an X or a Y sex chromosome. If the sperm that fertilizes an egg has an X chromosome, the baby is female; if it has a Y chromosome, the baby will be a boy.

Detailed explanation-2: -Each person normally has one pair of sex chromosomes in each cell. Females have two X chromosomes, while males have one X and one Y chromosome. Early in embryonic development in females, one of the two X chromosomes is randomly and permanently inactivated in cells other than egg cells.

Detailed explanation-3: -Humans and most mammals have two sex chromosomes, the X and Y. Females have two X chromosomes in their cells, while males have X and Y chromosomes in their cells. Egg cells all contain an X chromosome, while sperm cells contain an X or a Y chromosome.

Detailed explanation-4: -(embryologist). While there exist many old-wives tales and myths about this, the truth is that there is a 50% chance that a sperm cell will carry an X chromosome and a 50% chance that it will carry a Y chromosome. So, in short, the assignment of gender occurs 100% randomly.

Detailed explanation-5: -The Y chromosome is present in males, who have one X and one Y chromosome, while females have two X chromosomes. Identifying genes on each chromosome is an active area of genetic research.