WVGSA Grade 8 Science Practice Questions - West Virginia General Summative Assessment Grade 8 Science Exam

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A pedigree chart traces a genetic trait through three generations. Two unaffected parents (unshaded symbols) have a child who expresses the genetic condition (shaded symbol). What mode of inheritance does this pattern demonstrate?

Autosomal dominant inheritance Autosomal recessive inheritance Incomplete dominance Environmental non-genetic trait

Correct Answer:

Autosomal recessive inheritance

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