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For a pea plant to be short in Mendel's model, both copies of the gene must be

Question
For a pea plant to be short in Mendel's model, both copies of the gene must be
T
t
one T and one t
either T or t, doesn't matter
Answer
t
Detailed Explanation
Both gene copies must be 't' (recessive) for the plant to be short; a single 'T' copy makes it tall.
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