Same chapter3 marksDifficulty: Medium
What is a mutation? State one example in human beings.
Genetics
3 marksDifficulty: Medium
Distinguish between homozygous and heterozygous, and between dominant and recessive.
Original Khojo Papers practice question — not from a past board paper.
Answer
An organism is homozygous for a character if the two alleles are identical, and heterozygous if they are different. A dominant allele expresses itself in the phenotype even when only one copy is present; a recessive allele is expressed only when both alleles are recessive.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
A heterozygous organism shows the dominant phenotype but carries the recessive allele.
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