Same chapter3 marksDifficulty: Medium
Distinguish between homozygous and heterozygous, and between dominant and recessive.
Genetics
1 markDifficulty: Medium
The sex of a human child is determined by:
- athe mother's ovum
- bthe father's sperm
- cthe size of the ovum
- dthe time of fertilisation
Original Khojo Papers practice question — not from a past board paper.
Answer
the father's sperm
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
All ova carry an X chromosome, so it is whether the sperm carries X or Y that decides the sex.
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