Zoology - Principles of Inheritance and Variation Question with Solution | TestHub
ZoologyPrinciples of Inheritance and VariationChromosomal Theory of Inheritance and LinkageEasy2 minPYQ_2020
ZoologyEasysingle choice
In a testcross involving F1dihybrid flies, more parental-type offspring were produced than the recombinant-type offspring. This indicates:
Options:
Answer:
C
Solution:
If a plant with genotype AaBb is crossed with that with aabb, then independent assortment would result in the production of 4 types of offsprings in equal proportion.
AaBb - gametes: AB Ab aB ab
Aabb - gametes: ab ab ab
Offspring according to independent assortment:
AaBb Aabb aaBb aabb
1 : 1 : 1 : 1
(Parental) (Recombinants) (Parental)
Since parental percentage is more than recombinants, it is due to linkage between genes A and B.
Stream:NTA_ABHYAS_NEETSubject:ZoologyTopic:Principles of Inheritance and VariationSubtopic:Chromosomal Theory of Inheritance and Linkage
⏱ 2mℹ️ Source: PYQ_2020
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