Zoology - Principles of Inheritance and Variation Question with Solution | TestHub
ZoologyPrinciples of Inheritance and VariationMendel's Laws of InheritanceEasy2 minPYQ_2020
ZoologyEasysingle choice
The height of a plant is controlled by three genes. The maximum height in the species is 24 inches, whereas the minimum height in the species is 6 inches. What would be the height of a plant of the same species whose genotype is AaBBcc?
Options:
Answer:
B
Solution:
This is an example of polygenic or quantitative inheritance. Let the height contributed by each dominant allele be 'x' inches and that by each recessive allele be 'y' inches. AABBCC will have maximum height. Thus, 6x = 24 and x = 4. aabbcc will have a minimum height. Therefore, 6y = 6 and y = 1. The given genotype AaBBcc has 3 dominant alleles and 3 recessive alleles. Thus
Stream:NTA_ABHYAS_NEETSubject:ZoologyTopic:Principles of Inheritance and VariationSubtopic:Mendel's Laws of Inheritance
⏱ 2mℹ️ Source: PYQ_2020
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