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CSIR NET 2022 | Life Science: Inheritance Biology | 10 November

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Question 1

The figure below represents normal sex determination, differentiation, and development in humans.


Identify A, B, C, and D

Question 2

A virgin Drosophila female was crossed with a wild type male. The F1 progeny obtained had four types of males as shown below.


Assuming that white eye and crossveinless mutations are X-linked and recessive the following statements were made:


1) F1 females were also of four types as that of males.


2) The white-eyed crossveinless male flies appeared due to independent assortment.


3) The map distance between the genes for white eye and crossveinless ¡s estimated to be 12cM.


4) The map distance between white eye and crossveinless is estimated to be 6 cM.


5) All F1 females are expected to be wild type.


6) The F1 wild type males appeared due to crossing over.


The combination with correct statements is


Question 3

The possible genotypes of endosperms borne on a heterozygous (Rr) plant will be:

Question 4

Interacting genes which are involved in producing continuous variation in phenotypes in a population are known as/constitute

Question 5

An increase in the inbreeding coefficient, F, is likely to result in:
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Jun 22CSIR NET & SET