Sterility is most pronounced in F1 generation of

Solution (By Examveda Team)

Sterility is most pronounced in the F1 generation of Interspecific.
An F1 hybrid is the first filial generation of offspring of distinctly different parental types. F1 hybrids are used in genetics, and in selective breeding, where the term F1 crossbreed may be used.
These F1 hybrids are usually created using controlled pollination, sometimes by hand pollination, and are mostly sterile.