Question

In an organism, tall phenotype is dominant over recessive dwarf phenotype, and the alleles are designated as T and t, respectively. Upon crossing two different individuals, total 250 offsprings were obtained, out of which 124 displayed tall phenotype and rest were dwarf. Thus, the genotype of the parents were- a)TT×TT b)TT×tt c)Tt×Tt d)Tt×tt

Answer 1

P: tall Tt x dwarf tt

The outcome of the crossing is 1:1

F1: 125 Tt tall : 125 tt dwarf

Thus, the answer is d)Tt×tt