Question : Guniea pig having black colour when crossed with guinea pig having same colour produced 80 offsprings, out of which 60 were black and 20 were whie. Now, find out a] What is the possible genotype of the guinea pigs? b] Which traits is dominant and which traits is recessive? c] What is this cross called as and what is its phenotypic ratio?

Question : Guniea pig having black colour when crossed with guinea pig

1.	Question : Guniea pig having black colour when crossed with guinea pig having same colour produced 80 offsprings, out of which 60 were black and 20 were whie. Now, find out a] What is the possible genotype of the guinea pigs? b] Which traits is dominant and which traits is recessive? c] What is this cross called as and what is its phenotypic ratio?
Answer» Solution :a] `Bb xx Bb` b] Black is dominant and WHITE is RECESSIVE, C] Monohybrid cross, phenotypic ratio=3:1