Concept of combining ability as measure of gene action was first proposed by___________________?

Related Mcqs:

1. Gene for gene hypothesis was proposed by__________________?

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

2. The suppression of the action of a gene or genes by a gene or genes not allelomorphic to these suppressed is known as __________________?

   A. Episode
   B. Co dominance
   C. Epistasis
   D. Dominance

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

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

4. Specific combining ability is primarily a function of___________________?

   A. Dominance variance
   B. Additive x dominance epistasis
   C. Dominance x dominance epistasis
   D. All the above

5. A gene which enhances the natural mutations rate of another gene in the same genome is kanown as___________________?

   A. Mutable gene
   B. Mutator gene
   C. Recepror gene
   D. Articulator gene

6. Reciprocal recurrent selection was proposed by___________________?

   A. Hays and limner (1950)
   B. Constock et al (1949)
   C. Allard (1955)
   D. Hull (1935)

7. A gene which exhibits higher mutation rate than others is referred as___________________?

   A. Mutator gene
   B. Antimutalor gene
   C. Mutable gene
   D. Hot spot

8. Red (RR) is crossed with white (ww). All the (Rw) offsprings are pink this is an indication that the R gene is_________________?

   A. Recessive
   B. Incomplete dominant
   C. Mutant
   D. Dominant

9. Apheliotropic gene is one which___________________?

   A. Affects more than five characters
   B. Affects more than ten characters
   C. Affects only one character
   D. Affects more than one character

10. In random mating population gene frequencies remain constant generation after generation in the absence of__________________?

    A. Mutation
    B. Selection
    C. Migration
    D. Random drift