Multiple choice

The phenotypic ratio of F2 plants in the monohybrid cross is

  1. 1:2:1

  2. 3:1

  3. 9:3:1

  4. 3:2
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In Mendel's monohybrid cross, the F2 generation displays a 3:1 phenotypic ratio - approximately 3/4 of offspring show the dominant trait and 1/4 show the recessive trait. This classic ratio emerges from the underlying genotypic ratio of 1:2:1 (homozygous dominant:heterozygous:homozygous recessive).

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