Question

which statement describes the f₁ generation of a mendelian monohybrid cross between two true - breeding parents?
○ only the dominant trait is visible in the f₁ generation.
○ only the recessive trait is visible in the f₁ generation.
○ neither the dominant nor recessive trait is visible in the f₁ generation.
○ both the dominant and recessive traits are visible in the f₁ generation.

Explanation:

In a Mendelian monohybrid cross between two true - breeding parents (one homozygous dominant, e.g., AA, and one homozygous recessive, e.g., aa), the \(F_1\) generation offspring will all have the genotype Aa. According to Mendel's law of dominance, in a heterozygous (Aa) individual, the dominant allele (A) will express its trait, and the recessive allele (a) will be masked. So only the dominant trait will be visible in the \(F_1\) generation.

Answer:

A. Only the dominant trait is visible in the \(F_1\) generation.