In a cross 45 tall & 14 dwarf plants were obtained, genotype of parents was :-

TT X TT

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TT X Tt

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Tt X Tt

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TT X tt

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Solution

The correct option is C Tt X Tt
Answer is option C i.e. "Tt X Tt"
As given in the question out of total progenies, 45 were tall and 14 were dwarf i.e. the phenotypic ratio of obtained tall and dwarf plant is 3:1. This ratio states that it is a monohybrid cross. The phenotypic ratio of 3:1 is observed when heterozygous plants are self-pollinated. Hence, genotype of parents is Tt and Tt.

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