NCERT Question 7 - Chapter 9 Class 10 - Heredity and Evolution

Outline a project which aims to find the dominant coat colour in dogs.

Answer:

We can follow Mendel’s approach to design a project to find the dominant coat colour in dogs.

In Mendel’s experiment we saw that when a homozygous tall and homozygous short plant were mated , only tall plants appeared in the F ₁ generation and it was concluded that the Tall variant is dominant.

Similarly, if a homozygous black male (or female) and a homozygous white female (or male) are made to mate, if only black coat colour appears in the F ₁ generation , we can conclude that black coat colour is dominant and white coat colour is recessive. 

If a white coat colour appears in the F ₁ generation , we can conclude that white coat colour is dominant and black coat colour is recessive.