Question

Sex of a child is due to
A)Size of the ovum
B)Health of father
C)Sex chromosome of father/Sperm
D)Sex chromosome of mother/ovum

Answer 1

Every cell in the human body consists of 23 pairs of chromosomes i.e a total of 46 numbers of chromosomes. In which half come from the mother and the other half comes from the father. The X chromosome and Y chromosome determine our sex as male or female when we are born.

Complete answer:
A zygote is formed when the mother's egg fuses with the father's sperms and zygote after multiple division forms into a baby. Humans have 23 sets of chromosomes in which 22 are the autosomes and 23rd is the sex chromosomes. The chromosomes are haploid when they fuse and give rise to a diploid offspring. Chromosomes are also the genetic material giving us characters which we inherit from our parents.
-Therefore, sex chromosomes are responsible for the determination of the sex of a child. Females have XX types of chromosomes and males have one X and one Y type of chromosomes. It gives us information that when the eggs are formed each egg has an identical X-chromosome but male sperms are not identical as they have one X-chromosome and one Y-chromosome. So it's a matter of chance that sperm fuses with the egg (X or Y).
-When sperm with X chromosome fuses with the egg, the child will have XX type of sex chromosomes i.e a girl child whereas if the sperm with the Y chromosome fuses with the egg, the child will have XY type of sex chromosomes i.e male child.
-This clearly shows that the father is responsible for the gender of the child, not the mother.

Additional Information:
-Every time women have blame if she gave birth to a daughter due to the lack of knowledge about the determination of sex. Therefore it is important to spread awareness between the peoples as it would eradicate the myth that the female is possible for the gender of her child.
-The awareness should also be spread by the doctors and the gynecologist through various medical camps and social media. This will help to bring down the rate of female infanticide.

So, the correct answer is, “sex chromosome of father/sperm”

Note:

-Chromosomes that participate in the determination of sex are called sex chromosomes.
-When the zygote formed by the fusion of sperm with X chromosomes, then the child will be a girl and when the zygote formed by the fusion of sperm with y chromosome then the child will be a boy.