For traits that are determined by single pairs of genes, recessive traits occur on population phenotypes ____ than those of dominant traits.

Name: For traits that are determined by single pairs of genes, recessive traits occur on population phenotypes ____ than those of dominant traits.
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Recessive traits are only expressed when an individual has two copies of the recessive allele. Therefore, they occur less often than dominant traits which only need one copy of the dominant allele to be expressed.

For Traits That Are Determined by Single Pairs of Genes