If society blames the mother for the birth of a girl, what is the most scientific response?
Answer and explanation
Correct answer: The mother always contributes an X chromosome, while sperm type creates the sex-chromosome difference
For the usual human XX–XY pattern, every egg carries X, whereas sperm may carry X or Y. Fertilisation with an X-bearing sperm generally produces XX, and fertilisation with a Y-bearing sperm generally produces XY. Thus blaming the mother for giving birth to a girl is scientifically unjustified. The result is a biological outcome of fertilisation, not a choice or fault of the mother.
Frequently asked questions
What is the correct answer to this question?
The mother always contributes an X chromosome, while sperm type creates the sex-chromosome difference
Why is this the correct answer?
For the usual human XX–XY pattern, every egg carries X, whereas sperm may carry X or Y. Fertilisation with an X-bearing sperm generally produces XX, and fertilisation with a Y-bearing sperm generally produces XY. Thus blaming the mother for giving birth to a girl is scientifically unjustified. The result is a biological outcome of fertilisation, not a choice or fault of the mother.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Heredity and Evolution. Topic: Sex determination.
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