Question

a pedigree chart like this one is characteristic of ______________ disorders. sex - linked dominant autosomal recessive sex - linked recessive dominant allelic

Explanation:

To determine the type of disorder, we analyze the pedigree:

1. Sex - linked recessive traits often show more affected males (since males have one X - chromosome). In the pedigree, we see more male symbols (the filled - in squares) affected. Autosomal recessive would have equal gender distribution and often skips generations with carriers. Sex - linked dominant would show affected females passing to offspring more, and "dominant allelic" is not a standard term for pedigree analysis. So the pedigree is characteristic of sex - linked recessive disorders.

Answer:

C. sex - linked recessive