MCQ
Marriages between close relatives and cousins is not advisable because
- AMore mutations can occur
- ✓More recessive defects are likely to appear
- CMore chances are there for $Rh$ blood group anomalies
- DMore chances are there for multiple births
✓
Answer
Correct option: B.
More recessive defects are likely to appear
b
(b) Marriages between close relatives and cousins is not advisable because recessive lethals are carried in heterozygous conditions and express themselves only when mating takes place between two carrier individuals or close relatives.
(b) Marriages between close relatives and cousins is not advisable because recessive lethals are carried in heterozygous conditions and express themselves only when mating takes place between two carrier individuals or close relatives.
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