Guinea pig having black colour when crossed with guinea pig having same colour produced 80 offspring out of which 60 were black and 20 were white. Now, find out:
(i) What is the possible genotype of the guinea Pig?
(ii) Which trait is dominant and which trait is recessive ?
(iii) What is this cross called as and what is its phenotypic ratio ?
(i) Bb x Bb
(ii) Black is dominant while white is recessive.
(iii) Monohybrid cross
Phenotypic ratio is = 3 :1