When a gene exists in more than one form, the different forms are called
Mating of an organism to a double recessive in order to determine whether it is homozygous or heterozygous for a character under consideration, is called
Variation stands for differences in traits of progenies from
Self pollination between $Tt$ and $Tt$ plants results into genotype ratio of
$BB =$ for black colour alleles
$bb =$ for brown colour alleles
Offspring of a cross between a black mouse and brown mouse allowed to interbreed than find out the percentage of black coat in them