I know about crosses Inheritance and this question is about Test Cross. I want to know if we can determine the genotype of hybrid plant by crossing with a pure recessive parent from Filial generation 1 or if we require more generations to know the genotype?
if the plant is homozygous then no need if it is dwarf as we know that dwarf genes are recessive but if the phenotype is tall then we have to find its genotype whether it is Tt or TT. I have come across a MCQ : the genotype of hybrid plant obtained from a cross can be determined by crossing the plant with - . To me the ans should be Pure recessive parent at F1 generation. But ans given is Pure recessive parent at F2 generation