NEETBiologyPrinciples of Inheritance and VariationMCQ+4 / −1
In a cross between a male and female, both heterozygous for sickle cell anaemia gene, what percentage of the progeny will be diseased?
- A100%
- B50%
- C75%
- D25%
View written solutionFree
Correct answer: D
The genotype of both male and female,
heterozygous for sickle-cell anaemia
gene can be represented as HbA HbS
Thus,

Total number of affected progenies = 1
Percentage of diseased/affected progenies =
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