Question

The sex of a child is determined by the?
A.Rh factor of the parents
B.Blood group of the father
C.Chromosome of the mother
D.Chromosome of the father

Answer 1

Hint: The sex of the infant is controlled by the sperm cell that treats the egg first. On the off chance that the sperm is conveying an X chromosome, the infant will be a young lady. In the event that the sperm is conveying a Y chromosome, the child will be a kid.

Complete answer:
Sex of a child: controlled by its chromosome make-up at origination. An incipient organism with two X chromosomes will turn into a young lady, while an undeveloped organism with a X-Y blend brings about a kid," "The Y chromosome conveys a basic quality, called SRY, which follows up on another quality called SOX9 to begin the advancement of testicles in the undeveloped organism. Significant levels of the SOX9 quality are required for ordinary testis improvement.
“However, in the event that there is some interruption to SOX9 action and just low levels are available, a testis won't create bringing about an infant with a problem of sex advancement. “Lead creator of the examination, Professor Andrew Sinclair, said that 90% of human DNA consists of purported 'garbage DNA or dim issue' which contains no qualities except for conveying significant controllers that expand or lessening quality action.
These administrative portions of DNA are called enhancers," he said. On the off chance that these enhancers that control testis qualities are upset it might prompt a child being brought into the world with a problem of sex improvement.

Hence the correct answer is OPTION(D)

Note: In human, the females have XX sex chromosome while the guys have XY chromosome. At the point when the X chromosome of female joins with X chromosome of male, a young lady will conceive and when X chromosome of females joins with Y chromosome of male, kid will conceive.