Q: 174 (SSC/NA)
question_subject:
Science
question_exam:
SSC
stats:
0,40,21,40,7,12,2
keywords:
{'chromosomes': [4, 1, 0, 1], 'parents': [3, 1, 4, 3], 'father': [15, 3, 10, 14], 'rh factor': [1, 0, 1, 0], 'child': [5, 2, 2, 8]}
The correct answer is option 1: Chromosomes of the father.
The sex of a child is determined by the chromosomes contributed by the parents. Humans have 23 pairs of chromosomes, with the 23rd pair determining the sex. Females have two X chromosomes, while males have one X and one Y chromosome. During fertilization, the father`s sperm can carry either an X or a Y chromosome. If an X sperm fertilizes the egg, the child will be female (XX). If a Y sperm fertilizes the egg, the child will be male (XY).
Options 2, 3, and 4 are not accurate in determining the sex of a child. The mother`s chromosomes, the Rh factor, and the father`s blood group do not play a direct role in determining the sex of the child.