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The chapter's overall logic for why each pea plant has two gene copies for every trait ultimately rests on the observation that copy

Question
The chapter's overall logic for why each pea plant has two gene copies for every trait ultimately rests on the observation that copy
only the mother's traits ever appear in offspring
both parents can influence the trait seen in the offspring, implying both contribute a gene
environmental factors alone control the F1 phenotype
traits skip every alternate generation randomly
Answer
both parents can influence the trait seen in the offspring, implying both contribute a gene
Detailed Explanation
Because Mendel's results showed both parental lines could influence F1 and F2 traits, it followed that both parents contribute a copy of the gene for each trait.
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