The Total solution for NCERT class 6-12
In guinea pigs, there is a cross carried out between a heterozygous male with black coat colour (Bb) and a female having white coat colour (bb). The male yields two types of gametes B and b whereas the female yields one type of gamete only, b. Therefore, the ratio of the genotype and phenotype in the progenies of F1 generation is in the same ratio, i.e., 1:1