18. In the following pedigree, the indicated trait is most likely caused by which type of allele? A) autosomal recessive B) autosomal dominant C) X-linked recessive D) X-linked dominant E) Y-linked
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If the trait were autosomal dominant, then every affected individual would have at least one affected parent. However, in the pedigree, there are affected individuals with unaffected parents. So, it cannot be autosomal dominant. Show more…
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