Question

The sex determination of the newborn child depends on its father and not on its mother justify the statement by giving at last two reasons?

Answer 1

Each male is xy meaning a x is inherited from the mother and the y from the father. Female is xx meaning a x is inherited from her mother and an x is inherited from his mother. This is why it is the x chromosome which determines the sex of a child. A child will always have x either xy or xx. Only male will be xy. Sex linked traits is another demonstration of determination of sex from the x because a male only has one x and will more than likely demonstrate a disorder in the genotype and phenotype than a female because he does not have the other x chromosome to override the recessive with the dominant trait. The x chromosome is larger and has more genetic material than the y which is why sex linked traits such as color blindness affects males at a higher percentage. In reality, this is how it should be looked at. A male contributes the x chromosome which has been inherited from the mother which is female.

Answer 2

The statement is true.

Explanation:

It can be easily explained:-

1. Female has chromosomal contribution of XX whereas male has XY .
2. Female produces only one type of gametes all with chromosome X whereas male produces two types of gametes one with chromosome X and other with Y
3. When egg of female fuses with the male sperm with chromosome X , female child is born
4. When egg of female fuses with male sperm with chromosome Y , male child is born.

This shows that the sex of child is depends on the father and not the mother.