Zoology - Principles of Inheritance and Variation Question with Solution | TestHub

ZoologyPrinciples of Inheritance and VariationSex DeterminationEasy2 minPYQ_2020
ZoologyEasysingle choice

A human male is heterozygous for autosomal genes 'A' and 'B' present on two different chromosomes, and also has hemophilic gene h. What proportion of his sperms will have abh genes?

Options:

Answer:
C
Solution:

Haemophilic gene h is present on X chromosome. The probability of his sperms having X chromosome or h gene is12. He is heterozygous Aa. The probability of his sperms having a is12. Similarly the probability of his sperms having b is12. Thus, the probability of his sperms having a, b and h gene is12×12×12=18

Stream:NTA_ABHYAS_NEETSubject:ZoologyTopic:Principles of Inheritance and VariationSubtopic:Sex Determination
⏱ 2mℹ️ Source: PYQ_2020

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