AP BIOLOGY

Detailed explanation-1: -F1 or first filial generation is the generation of hybrids produced from a cross between the genetically different individuals called parents. For example, Tt individuals are produced in F1 generation from a cross between TT and tt parents.

Detailed explanation-2: -When displaying crossings between two parental organisms, the resulting offspring are referred to as F1. If those offspring are crossed between themselves, the resulting generation is called F2. If two individuals of the F2 generation are crossed, they produce the F3 generation.

Detailed explanation-3: -The term “F1” means the “first filial generation, ” or the initial cross between two genetically distinct plants. Often an F1 cross does not yield the desired goals because some traits do not show up in those first generation seedlings.