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Principles of Inheritance and Variation question

2021 · Q55
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Principles of Inheritance and Variation question

2021 · Q55

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?
  1. A
    100%
  2. B
    50%
  3. C
    75%
  4. D
    25%
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,

NEET 2021 Biology - Principles of Inheritance and Variation Question 39 English Explanation


Total number of affected progenies = 1

∴\therefore∴ Percentage of diseased/affected progenies = 14×100=25%{1 \over 4} \times 100 = 25\% 41​×100=25%

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