HardBotanyPrinciples of Inheritance & Variation
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A pure tall pea plant is crossed with pure dwarf pea plant. The progeny is self-pollinated. The ratio of true breeding tall pea plants to true breeding dwarf pea plants shall be:
A
2:1
B
1:1
C
3:1
D
1:2
Explanation
In F2, the genotypic ratio is 1 (TT) : 2 (Tt) : 1 (tt). The true breeding (homozygous) tall plants (TT) and true breeding dwarf plants (tt) are in a 1:1 ratio.
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