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Dominant Traits

If tall plant...

Question

If tall plant contains TT gene then dwarf plant contains _____.

A

tt

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B

Tt

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C

TTtt

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D

tttt

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Solution

The correct option is A tt
If the tall plant contains a TT gene then the dwarf plant contains tt. Tallness is the dominant trait and hence expressed in capital letters. Whereas, the dwarfness is a recessive character, which can express only when homozygous. In short, a tall plant can have two types of genotypes: TT and Tt. A dwarf plant can have only one genotype: tt

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