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Question
A cross between a tall plant (TT) and short pea plant (tt) resulted in progeny that were all tall plants because
Options
tallness is the dominant trait
shortness is the dominant trait
tallness is the recessive trait
height of pea plant is not governed by gene ‘T’ or ‘t’
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Solution
tallness is the dominant trait
Explanation -
In a cross between two organisms differing in one pair of contrasting traits, F1 hybrid shows only one of the parental traits, and this trait is called the dominant trait. Similarly, in the question, since the only tall trait is expressed in the progeny resulting from a cross between a tall plant and a short pea plant, tallness is the dominant trait.
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