Question

In a Mendel's monohybrid cross, the percentage of true breeding dominant and pure recessive in F${}_1$ generation would be

• A. 50%
• B. 25%
• C. 75%
• D. 0%

Answer 1

The correct option is D 0%

In a Mendel's experiment, a cross between two pure (homozygous) patterns in which the inheritance pattern of only one of the contrasting characters is studied is called monohybrid cross. With true-breeding parents (one homozygous dominant, one homozygous recessive), all of the F${}_1$ progeny will be heterozygous and show the dominant phenotype, e.g,. Tt. Hence, 0% progeny show true-breeding dominant and pure recessive in F${}_1$ generation.