Multiple Choice
Which conclusion did Mendel draw from observing the F2 generation in his pea plant crosses?
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2. Mendel's Laws of Inheritance
Mendel's Experiments and Laws
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In his experiments, Mendel observed a 3:1 ratio between dominant and recessive traits in which generation of pea plants?
A
the F1 generation
B
the F3 generation
C
the parental (P) generation
D
the F2 generation
Verified step by step guidance1
Recall Mendel's classic pea plant experiments where he crossed true-breeding plants with contrasting traits (e.g., tall vs. short).
Understand that the parental (P) generation consists of homozygous individuals for each trait (e.g., TT and tt).
The F1 generation results from crossing the P generation and consists entirely of heterozygous individuals (e.g., Tt), showing only the dominant trait.
When F1 individuals are self-crossed, the F2 generation is produced, where Mendel observed a phenotypic ratio of approximately 3 dominant : 1 recessive.
Therefore, the 3:1 ratio of dominant to recessive traits appears in the F2 generation, demonstrating the segregation of alleles.
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