Navigate

In F₂ generation, a ratio of 1 : 4 : 6 : 4 : 1 is obtained instead of 9 : 3 : 3 : 1.

In F₂ generation, a ratio of 1 : 4 : 6 : 4 : 1 is obtained instead of 9 : 3 : 3 : 1. It indicates

Options

(a) incomplete dominance
(b) qualitative inheritance
(c) quantitative inheritance
(d) all of the above

Correct Answer:

quantitative inheritance

Explanation:

Quantitative inheritance is a type of inheritance controlled by one or more genes in which the dominant alleles have cumulative effect with each dominant allele expressing a part or unit of the trait, the full trait being shown only when all the dominant alleles are present. In quantitative inheritance the number of phenotypes is 3(1:2:1) when one polygene pair, 5(1:4:6:4:1) when two polygene pair and 7(1:6:15:20:15:6:1) when three polygene pairs are involved.

UP1995
admin:

Related Questions

  1. Which one of the following statements is correct for secondary succession ?
  2. Four healthy people in their twenties got involved in injuries resulting in damage and death
  3. The process by which there is inhibition of glycolysis by atmospheric O₂ is
  4. Longest phase in Mphase of cell cycle is
  5. Predation and parasitism are which type of interactions?