Population, Quantitative & Conservation Genet

1

In a population under Hardy-Weinberg equilibrium, what happens to the genotype frequencies over successive generations in the absence of evolutionary forces?

Population Genetics Population Genetics ICAR JRF Fish Genetics And Breeding 2024 Shift 1 MCQ (Single Correct) +4 / −1

2

Biological evolution by natural selection is when genes . individuals and populations

Population Genetics Population Genetics ICAR JRF Fish Genetics And Breeding 2024 Shift 1 MCQ (Single Correct) +4 / −1

3

(A) . Necrophagous fish are carrion-eaters.

(B) . Polyphagy predominate in boreal and arctic zones

(C) . Ambush predators actively search and pursue the prey.

(D) . Temporal aphagy is typical in anadromous fish during spawning

Choose the correct answer from the options given below:

Population Genetics Population Genetics ICAR JRF Fish Genetics And Breeding 2024 Shift 1 MCQ (Single Correct) +4 / −1

4

How does migration between populations affect the Hardy-Weinberg equilibrium?

Population Genetics Population Genetics ICAR JRF Fish Genetics And Breeding 2024 Shift 1 MCQ (Single Correct) +4 / −1

5

If the frequency of the dominant allele (p) in a population is 0.7, what is the frequency of the heterozygous genotype (Aa) according to the Hardy-Weinberg equilibrium?

Population Genetics Population Genetics ICAR JRF Fish Genetics And Breeding 2024 Shift 1 MCQ (Single Correct) +4 / −1

6

A heritability value of 0.7 for height in humans indicates that:

Quantitative Genetics Quantitative Genetics ICAR JRF Fish Genetics And Breeding 2024 Shift 1 MCQ (Single Correct) +4 / −1

7

Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).

Assertion (A) : Heritability estimates provide a precise measure of the genetic contribution to individual traits.

Reason (R) : Heritability estimates remain constant across different environmental conditions.

In light of the above statements, choose the correct answer from the options given below.

Quantitative Genetics Quantitative Genetics ICAR JRF Fish Genetics And Breeding 2024 Shift 1 Assertion & Reason +4 / −1

8

The quantitative traits are influenced by

Quantitative Genetics Quantitative Genetics ICAR JRF Fish Genetics And Breeding 2024 Shift 1 MCQ (Single Correct) +4 / −1

9

The distribution pattern of phenotypes for polygenic traits is

Quantitative Genetics Quantitative Genetics ICAR JRF Fish Genetics And Breeding 2024 Shift 1 MCQ (Single Correct) +4 / −1

10

In analysis of variance (ANOVA), what does a high F-statistic value indicate?

Genetic Variance Components Genetic Variance Components ICAR JRF Fish Genetics And Breeding 2024 Shift 1 MCQ (Single Correct) +4 / −1

11

The dominance genetic variance can be estimated using which of the following methods?

Genetic Variance Components Genetic Variance Components ICAR JRF Fish Genetics And Breeding 2024 Shift 1 MCQ (Single Correct) +4 / −1

12

Which of the following is NOT a genetic variance component in quantitative genetics?

Genetic Variance Components Genetic Variance Components ICAR JRF Fish Genetics And Breeding 2024 Shift 1 MCQ (Single Correct) +4 / −1

13

Which statistical analysis is commonly used to study the inheritance of quantitative traits?

Genetic Variance Components Genetic Variance Components ICAR JRF Fish Genetics And Breeding 2024 Shift 1 MCQ (Single Correct) +4 / −1

14

Which of the following is a strategy used to maintain genetic diversity in captive populations?

Effective Population Size , Genetic Drift, Bo Effective Population Size , Genetic Drift, Bo ICAR JRF Fish Genetics And Breeding 2024 Shift 1 MCQ (Single Correct) +4 / −1

15

The value of inbreeding coefficient (F) in a fish population mainly depends on

Effective Population Size , Genetic Drift, Bo Effective Population Size , Genetic Drift, Bo ICAR JRF Fish Genetics And Breeding 2024 Shift 1 MCQ (Single Correct) +4 / −1

16

The Nagoya Protocol on Access to Genetic Resources and Equitable Sharing of Benefits, came into force in—

Conservation Genetics Conservation Genetics ICAR JRF Fish Genetics And Breeding 2024 Shift 1 MCQ (Single Correct) +4 / −1

17

As per IUCN list of threatened species, Tor putitora, Tor malabaricus and Tor khudree are—

Conservation Genetics Conservation Genetics ICAR JRF Fish Genetics And Breeding 2024 Shift 1 MCQ (Single Correct) +4 / −1

18

Which of the following fatty acids is commonly found in fish oils and is known for its health benefits

Conservation Genetics Conservation Genetics ICAR JRF Fish Genetics And Breeding 2024 Shift 1 MCQ (Single Correct) +4 / −1

19

High ____ increases the ability of a species to survive major changes in the environment.

Conservation Genetics Conservation Genetics ICAR JRF Fish Genetics And Breeding 2024 Shift 1 MCQ (Single Correct) +4 / −1

20

Do the hypercapnia-induced decrease of intra- and extra-cellular pH values compensate by the increase in one of the following molecules/ions?

Genetic Differentiation Genetic Differentiation ICAR JRF Fish Genetics And Breeding 2024 Shift 1 MCQ (Single Correct) +4 / −1

21

Outlier loci are often associated with

Genetic Differentiation Genetic Differentiation ICAR JRF Fish Genetics And Breeding 2024 Shift 1 MCQ (Single Correct) +4 / −1

22

In a population with two subpopulations, what effect would you expect on observed heterozygosity due to the Wahlund effect?

Genetic Differentiation Genetic Differentiation ICAR JRF Fish Genetics And Breeding 2024 Shift 1 MCQ (Single Correct) +4 / −1