The Presence of a Recessive Allele Can

question 143

Multiple Choice

 The presence of a recessive allele can

• A) only be expressed when paired with a matching allele.
• B) influence a genotype but not a phenotype.
• C) influence the phenotype of female children but not male children.
• D) influence a phenotype when it occurs in chromosome pairs or on the X chromosome of a male.

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