유전학에서, 두 순종 부모 세대(P세대)를 교배하여 얻은 첫 번째 잡종 세대.
The first filial generation, referring to the offspring resulting from a cross of two parental types (P generation).
예문:
"In Mendel's experiments, the F1 generation always displayed the dominant trait."
"Crossing two different pure lines yields the F1 hybrid generation."
"The F1 generation is typically uniform in phenotype and genotype."