Pedigree Analysis Chart Quiz

What does a square symbol represent in a pedigree chart?

• Deceased individual

• Undetermined gender

• Female

• Male

Which symbol indicates a proband individual in a pedigree chart?

• Arrow pointing towards the symbol

• Slash through the symbol

• Fully shaded symbol

• Central dot within a symbol

What type of inheritance is indicated by a pedigree chart where males and females are affected equally and the trait does not skip generations?

• Autosomal dominant

• Autosomal recessive

• X-linked dominant

• Y-linked recessive

In a pedigree chart, what does a fully shaded symbol typically indicate?

• Carrier of a trait

• Deceased individual

• Affected individual

• Unaffected individual

Which type of pedigree chart would show that only males are affected and the trait is carried on the Y-chromosome?

• Y-linked recessive

• X-linked recessive

• Autosomal dominant

• Autosomal recessive

What does a central dot within a symbol in a pedigree chart represent?

• Deceased individual

• Unaffected individual

• Affected individual

• Carrier of a trait

Which feature is typical of an autosomal recessive pedigree chart?

• Affected father transfers the disease to all daughters

• Trait never skips a generation

• Trait may skip a generation

• Only males are affected

In a pedigree chart, what does a line between two symbols typically represent?

• Siblings

• Parent-child relationship

• Marriage or mating

• Twins

Which type of inheritance is indicated by a pedigree chart where an affected father can transfer the disease to all female offspring but not to male offspring?

• X-linked recessive

• Y-linked recessive

• Autosomal dominant

• X-linked dominant

What does a diamond symbol in a pedigree chart typically indicate?

• Female

• Male

• Deceased individual

• Undetermined gender