MCQ on Biometrical Genetics / Quantitative Genetics Part -35 For ARS NET / SRF Exams

 

1. Which of the following genetical assumptions are associated with selection indices

(i) Random selection of parent for mating and linear or additive nature of component characters

(ii) Absence of linkage and maternal effects

(iii) Equal survival of all genotypes in a population and absence of multiple alleles

(iv) Both (ii) and (iii)

2. Construction of selection index is a difficult task due to

(i) Requires a lot of statistical and mathematical calculations and non-fulfillment of the statistical and genetical assumptions when constructing selection indices

(ii) Only applicable to individual plant selection

(iii) Uncertainty in estimation of statistics upon which index weight is based

(iv) All of these

3. Who first applied selection index for genetic improvement of grain yield in maize

(i) Brim et al (1959)

(ii) Kempthorne and Nordskog (1959)

(iii) Smith (1936)

(iv) Robinson et al (1951)

4. Who first applied selection index in soybean for genetic improvement for oil yield

(i) Brim et al (1959)

(ii) Hanson and Johnson (1957)

(iii) Smith (1936)

(iv) Robinson et al (1951)

5. Selection indices work out from

(i) Replicated data only

(ii) Unreplicated data only

(iii) Both (i) and (ii)

(iv) None of these

6. Discriminant function analysis provides information about

(i) Yield components

(ii) Indirect selection for genetic improvement for yield

(iii) Both (i) and (ii)

(iv) None of these