Botany-(general)

NEET Botany (general) MCQ Question

Type: MCQ-numerical-Hard-Class 12

In a monohybrid cross between two heterozygous tall plants (Tt), what is the probability that a randomly selected tall offspring is homozygous tall (TT)?

A

1/3

B

1/2

C

1/4

D

2/3

Correct Answer

Option A

Detailed Explanation

From the Punnett square for a Tt x Tt cross, 3/4 of the offspring are tall (TT or Tt). Among these, 1/3 are TT (homozygous tall) and 2/3 are Tt (heterozygous tall), given that the total tall plants are TT and Tt.

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