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Question 67

Which statements about the genotype ratio and the phenotype ratio worked out from the same monohybrid cross are true? Select all that apply.

  1. They are always the same numbers as each other
  2. They answer different questions and usually come out as different numbersCorrect answer
  3. A phenotype ratio gives a separate figure for every different pair of alleles
  4. They are read from the same set of outcomes, grouped in different waysCorrect answer

Explanation

One ratio sorts the offspring by the pair of alleles they carry and the other sorts them by the characteristic they show, so groups that stay apart in the first sorting fall together in the second. Because the sorting differs, quoting one ratio as an answer to the other question misreports the cross even though both are read from the same set of outcomes.

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Question 67: Which statements about the genotype ratio and the phenotype… · Genetics Basics · Questena