In a pedigree chart, a filled square usually represents what?
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Correct answer: An affected male
In standard pedigree symbolism, squares represent males and filled (shaded) shapes denote affected individuals — hence a filled square indicates an affected male.
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More Pedigree analysis questions
- Which mode of inheritance is most consistent with a trait that appears in every generation and affects both sexes equally?
- If two unaffected parents have an affected child, which mode of inheritance is most likely?
- In a pedigree for an X-linked recessive disease, which of the following patterns is most suggestive?
- Which clue argues against X-linked dominant inheritance in a pedigree?
- Which assumption is typically made when performing classic pedigree analysis under Mendelian inheritance models?
- In autosomal dominant inheritance with full penetrance, what is the probability a child will be affected if one parent is heterozygous (Aa)…