Question

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

Explanation:

To determine the type of disorder from the pedigree, we analyze inheritance patterns. Sex - linked recessive disorders often show more affected males (since males have one X chromosome). In the pedigree, the affected individuals seem to follow a pattern consistent with sex - linked recessive: affected males can pass the trait, and females (with two X chromosomes) are less likely to be affected unless they inherit two recessive alleles. Autosomal recessive would show equal sex distribution and often skip generations with carriers. Sex - linked dominant would have 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:

sex - linked recessive