Question

when two genes control single character and have cumulative effect , the ratio is .......​

Answer 1

Answer:

don't forget to send like

Explanation:

When two genes control single character and have cumulative effect, the ratio is 1:4:6:4:1. - Two or more genes controlling a single trait in an individual are called polygenes. This type of inheritance is called polygenic inheritance.

Answer 2

The ratio is 1:4:6:4:1

Explanation:

• The quantitative traits also are referred to as metric traits. In quantitative inheritance, the offspring don't show clear cut variations among them, rather show the intermediate character of 2 oldsters. The gradations in characters square measure determined by a variety of genes and every one the genes have an additive impact or square measure additive. It implies that every factor encompasses a certain quantity of impact and a lot of is that the variety of dominant genes, a lot of is that the degree of expression of the character.

• Nilsson-Ehle (1908) created an awfully fascinating study on the color of grain in wheat. He crossed red kernelled selection with white kernelled strain and obtained F1  plants whose grains were uniformly red however intermediate between red and white parental generations. once the members of F1  were self-crossed 5 completely different composition categories appeared in F2  in the magnitude relation of 1: 4: 6: 4: 1.