Q: 358 (SSC/NA)
question_subject:
Science
question_exam:
SSC
stats:
0,7,2,7,0,0,2
keywords:
{'sex chromosomes': [1, 0, 0, 0], 'men': [4, 3, 12, 9], 'xy': [3, 0, 0, 0], 'pair': [7, 0, 1, 12], 'yy': [1, 0, 0, 0]}
The correct answer is option 1, XY. In humans, sex is determined by the combination of sex chromosomes inherited from the parents. Men have one X chromosome and one Y chromosome, while women have two X chromosomes. The presence of the Y chromosome in men determines their development into males.
Option 2, XX, is incorrect because this represents the pair of sex chromosomes in women, not men. Women have two X chromosomes.
Option 3, YY, is also incorrect because YY is not a viable combination. It would result in a genetic abnormality and is not found in humans.
Option 4 states that no option is correct, but this is incorrect as option 1, XY, is indeed the correct answer.