If daughters are repeatedly born in a family what would be scientifically wrong to blame?
Answer and explanation
Correct answer: Only the mother
The governing concept is that the mother normally contributes X through every egg, while the father’s sperm contributes either X or Y. An XX combination results when an X-bearing sperm fertilises the egg, and an XY combination results when a Y-bearing sperm does so. Therefore, repeatedly having daughters is not scientifically the mother’s fault. Option A is correct; the other options refer to biological factors that should be understood, not unfairly blamed.
Frequently asked questions
What is the correct answer to this question?
Only the mother
Why is this the correct answer?
The governing concept is that the mother normally contributes X through every egg, while the father’s sperm contributes either X or Y. An XX combination results when an X-bearing sperm fertilises the egg, and an XY combination results when a Y-bearing sperm does so. Therefore, repeatedly having daughters is not scientifically the mother’s fault. Option A is correct; the other options refer to biological factors that should be understood, not unfairly blamed.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: World of Living. Topic: Heredity and Evolution.
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