State the law of segregation.

Define trihybrid cross. Mention its F ₂ phenotypic ratio.

Give an account on cytoplasmic male sterility.

In the chart given below, 'AA' are the genes located in a chromosome of Pisum sativum.
Observe the chart and mention the genetic phenomenon does it indicates.

Name the respective pattern of inheritance where F ₁ phenotype
a) resembles anyone of the two parents
b) is an intermediate between two parental traits.