Inheritance Biology-Gene Mapping Methods [CSIR (Council of Scientific & Industrial Research) Life Sciences]: Questions 1 - 2 of 13

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Question 1

Appeared in Year: 2018

Question MCQ▾

A quadratic check of gene combinations and disease reaction types in a host-pathogen system where the gene-for-gene concept operates is represented below: (December)

Table Shows the Resistance or Susceptibility in the Plant
Virulence or a virulence genes in the pathogenResistance or susceptibility in the plant
R (resistant dominant)R (susceptible recessive)
A. (a virulent dominant)ARAr
a. (virulent recessive)aRar

The following statements were made about the above genotypes.

1. AR genotype has incompatible (resistant) reactions.

2. Ar genotype has compatible (susceptible) reactions.

3. ar genotype has compatible (susceptible) reactions.

4. aR genotype has incompatible (resistant) reactions.

Choose the combination with all correct statements.

Choices

Choice (4)Response

a.

1,2 and 3

b.

2,3 and 4

c.

1,2 and 4

d.

1,3 and 4

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Question 2

Appeared in Year: 2019

Question MCQ▾

A Lod score of 3 represents a Recombination Frequency (RF) that is? (June)

Choices

Choice (4)Response

a.

3 times as likely as the hypothesis of no linkage

b.

30 times as likely as the hypothesis of no linkage

c.

100 times as likely as the hypothesis of no linkage

d.

1000 times as likely as the hypothesis of no linkage

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