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Question 25

Which description of alleles is correct?

  1. Different versions of the same geneCorrect answer
  2. Two different genes on one chromosome
  3. Two whole chromosomes of a pair
  4. Two copies of one chromosome

Explanation

Alleles are the alternatives available at one place on the chromosome pair, so they are forms of a single gene rather than separate genes. Two different genes do different jobs and never compete for the same position, which is what makes them genes and not alleles of one another.

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Question 25: Which description of alleles is correct? · Genetics Basics · Questena