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Mendel’s simplest crosses considered only two pairs of contrasting traits.

The results of Mendel’s monohybrid crosses were not sex dependent.

Naturally flowers of pea plant undergo cross pollination and self-pollination is very rare.

During cross of tall (true breeding variety) and dwarf pea plant, the dwarf trait that disappeared in the F₁ generation, never reappeared in the F₂ generation.

answer is B.

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Detailed Solution

The results of Mendel’s monohybrid crosses were not sex dependent. We note one further aspect of Mendel’s monohybrid crosses. In each cross, the F₁ and F₂ patterns of inheritance were similar regardless of which P₁ plant served as the source of pollen (sperm) and which served as the source of the ovum (egg). The crosses could be made either way—pollination of dwarf plants by tall plants, or vice versa. Crosses made in both these ways are called reciprocal crosses. Therefore, the results of Mendel’s monohybrid crosses were not sex dependent.
Mendel’s simplest crosses involved only one pair of contrasting traits.
During cross of tall (true breeding variety) and dwarf pea plant, the dwarf trait that disappeared in the F₁ generation, reappeared in the F₂ generation.
Flowers of of pea plant naturally show self-pollination.

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