Shull and East (1908) proposed over dominance hypothesis of hetrosis in_________________?

Related Mcqs:

1. Dominance hypothesis of heterosis was first proposed by__________________?

   A. Davenport (1908)
   B. Shull (1914)
   C. Bruce (1910)
   D. Davis (1927)

2. Gene for gene hypothesis was proposed by__________________?

   A. Nelson (1973)
   B. Flor (1956)
   C. Robinson (1971)
   D. Vander plank (1963)

3. In case of incomplete dominance in the f2 generation_______________________?

   A. Ratio of phenotypes is 3:1
   B. Ratio of genotypes is 3:1
   C. Phenotypic ratio corresponds to the genotypic ratio
   D. None of the above

4. Presence of slight differences in identical twins support the hypothesis that___________________?

   A. Single gene may produce multiple effects
   B. Dominance may be incomplete
   C. The environment effects the expression of genetic character
   D. Genetic trails are influence by many genes

5. Concept of gene for gene hypothesis was developed in____________________?

   A. Linseed
   B. Oat
   C. Gram
   D. Tomato

6. Maximum mutants varieties are evolved in_________________?

   A. Rice
   B. Wheat
   C. Barley
   D. Maize

7. The food in onion is stored in_________________?

   A. Root
   B. Stem
   C. leaves
   D. Scale leaves

8. If diploid chromo me number in flowering plant is 8 then 4 chromosomes will be present in_________________?

   A. Endosperm cell
   B. Leaf cells
   C. Cotyledonary cell
   D. Synergids

9. A mutation is a change in_________________?

   A. Chromosome number
   B. RNA
   C. DNA
   D. Chromosome structure

10. Stadler, first used X-rays for induction of mutation in_________________?

    A. Oat
    B. Maize
    C. Wheat
    D. Barley