Multiple choice

The supplementary gene ratio is 9:3:4

  1. True

  2. False

  3. It is 9:7

  4. It is 12:3:1
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A Correct answer
Explanation

Supplementary genes produce a 9:3:4 phenotypic ratio when two genes interact, where one gene's dominant allele supplements the other. In this ratio, 9 have both dominant traits, 3 show only one dominant trait, and 4 show recessive traits. This differs from complementary (9:7) or other gene interaction patterns.

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