Multiple choice

If a single pair of alleles determines the number of fingers for an animal species and homozygous dominant individuals have 8 fingers, heterozygous ones have 7, and homozygous recessive ones have 6, the inheritance pattern would be referred to as

  1. genome imprinting

  2. intermediate expression

  3. pleiotropy

  4. reduced penetrance
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B Correct answer
Explanation

This hypothetical example would be an example of the intermediate expression of a trait. Apparently, this is rare. For most genes, it is expected that individuals with heterozygous genotypes will have phenotypes like homozygous dominant individuals.

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