If tall is dominant over short, then which of the following character will be expressed when both the dominant allele and recessive allele are present?
A
Tall
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B
Short
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C
Medium height
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D
It is random
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Solution
The correct option is ATall The experiment in the question describes a monohybrid cross with height under study. In such a case, the dominant allele (tall) is always expressed over recessive (short) when they are both present, that is in the heterozygous condition.