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)
Virulence or a virulence genes in the pathogen | Resistance or susceptibility in the plant | |
R (resistant dominant) | R (susceptible recessive) | |
A. (a virulent dominant) | AR | Ar |
a. (virulent recessive) | aR | ar |
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 |
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 |