If the egg has an X chromosome and the sperm has a Y chromosome, what will be the sex-chromosome combination of the child?
Answer and explanation
Correct answer: Male child
The egg contributes X and the sperm contributes Y. Combining these chromosomes gives XY: X + Y = XY. In the standard human chromosomal model taught at this level, XX is associated with a female child and XY with a male child. Therefore option B is correct. Option A would result from X + X, while options C and D ignore the definite chromosome combination produced at fertilisation.
Frequently asked questions
What is the correct answer to this question?
Male child
Why is this the correct answer?
The egg contributes X and the sperm contributes Y. Combining these chromosomes gives XY: X + Y = XY. In the standard human chromosomal model taught at this level, XX is associated with a female child and XY with a male child. Therefore option B is correct. Option A would result from X + X, while options C and D ignore the definite chromosome combination produced at fertilisation.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Heredity and Evolution. Topic: Sex determination.
Student feedback
Was this question useful?
👍 0 Helpful 👎 0 Not helpful
Yes 0% No 0%
0 responsesStudent Reviews
No published reviews yet.
