Multiple choice

The F2 ratio produced by complementary genesis essentially a modification of the Dihybrid F2 Mendelian Ratio because:

  1. the basic number of proportion of all kinds of offsprings is 16 in both types

  2. two pairs of genes are involved in the inheritance of complementary genes

  3. the different expression of the complementary genes produce one phenotype

  4. non-allelic dominant genes interact to produce one phenotype
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A Correct answer
Explanation

The F2 ratio (9:7) from complementary genes is a modification of dihybrid Mendelian ratio (9:3:3:1) because both ratios are based on 16 parts. Complementary genes require both dominant alleles together for trait expression, collapsing four phenotypes into two, but the fundamental 16-part proportion remains.

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