In a Mendelian Monohybrid Cross,which Generation is Always Completely Heterozygous

Question

In a Mendelian monohybrid cross,which generation is always completely heterozygous.
A)F3
B)P
C)F2
D)P2
E)F1

Accepted Answer

Mendel first did monohybrid crosses that involved only one trait.He began with a P generation (two homozygous parents),and that was followed by an F1 generation (heterozygous)and then an F2 generation (3:1 ratio).