Question

The belief that the mother is completely responsible for the sex of the child is wrong, because the child

• A. Gets sex determining chromosome only from the mother
• B. Develops in the body of the mother
• C. Gets one sex chromosome from the mother and the other from the father
• D. Gets sex determining chromosome only from the father

Answer 1

The correct option is D Gets sex determining chromosome only from the father

The male sex gametes possess X and Y chromosomes, and the female sex gametes possess two X chromosomes. The sex of the child depends on the gamete of the male which fuses with the female. If the X gamete fuses, the zygote formed has the XX chromosomes which form a girl child whereas, the male child is formed by the zygote with the XY chromosome content. So, the correct answer is option D.