Botany-Sex Determination
NEET Botany Sex Determination MCQ Question
Type: MCQ-numerical-Medium-Class 12
In a genetic cross between two heterozygous tall pea plants (Tt), what is the probability of obtaining a homozygous recessive dwarf plant (tt) in the F2 generation?
A
0.25
B
0.50
C
0.75
D
0.00
Correct Answer
Option A
Detailed Explanation
The F2 generation results from random fertilization of the F1 generation (Tt x Tt), leading to a 1:2:1 genotypic ratio (TT:Tt:tt). Thus, the probability of obtaining a homozygous recessive dwarf (tt) plant is 1/4 or 0.25.
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