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Question

What is the phenotypic ratio of a dihybrid cross?


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Solution

Dihybrid cross:

  1. A dihybrid cross refers to a cross between two folks who have observed and expected traits that are monitored by two different genes.
  2. A cross between two heterozygotes has a phenotypic ratio of 9:3:3:1.
  3. 916 of the persons have the dominant phenotype for both characteristics, 316 have the dominant phenotype with one characteristic, 316 have the dominant phenotype for the other characteristic, and 116 are recessive for both characteristics.

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