Question

How many genes are received in children from father?

• A. 25%
• B. 50%
• C. 75%
• D. 25-50%

Answer 1

The correct option is B 50%

Every somatic cell in the human body contains 23 pairs of chromosomes. Out of these 23 pairs, the first 22 pairs are autosomes and the remaining pair is sex chromosome (X and Y). Females (mother) have two X chromosomes and males (father) have one X and one Y chromosome. The gamete receives half of the chromosomes. Therefore, the male gamete has 22 autosomes and either X or Y chromosome. On the other hand, the female gamete has 22 autosomes and X chromosome. During reproduction, the male and female gametes fuse and thus the child receives an equal amount of chromosomes from both the parents (50% from each).

So, the answer is B.