Question

when viewing a human pedigree for a particular genetic condition, you observe that affected individuals appear in some generations, but not in others. this suggests the condition is _______

multiple choice

○ epistatic

○ sex - linked

○ dominant

○ recessive

○ pleiotropic

Explanation:

A recessive genetic condition requires two copies of the abnormal allele (homozygous recessive) to be expressed. Carriers (heterozygous) are unaffected but can pass the allele to offspring. This leads to affected individuals skipping generations—carriers may have unaffected children, but two carriers can produce an affected child later, causing gaps in the pedigree. Other options: epistatic refers to gene interaction, sex-linked relates to X/Y chromosomes, dominant conditions usually appear in every generation, and pleiotropic means one gene affects multiple traits. None of these match the "skipping generations" trait as recessive does.

Answer:

recessive