Pedigrees

Question 1

Pedigree is dominant

Answer 1

If both parents and offspring have the trait

Question 2

Pedigree is recessive

Answer 2

If offspring have the trait but parents don’t

Question 3

Pedigree is sex linked

Answer 3

If mostly males are affected

Question 4

Pedigree is autosomal

Answer 4

If both males and females are affected equally

Question 5

Pedigree is autosomal recessive

Answer 5

• Trait skips generations
• Males and females are affected equally

Question 6

Pedigree is autosomal dominant

Answer 6

• Trait doesn’t skip generations
• Affected individuals pass the trait to roughly half the offspring

Question 7

Pedigree is X linked recessive

Answer 7

• Trait skips generations
• Affected fathers don’t pass it to their sons

Question 8

Pedigree is X linked dominant

Answer 8

• Doesn’t skip generations
• Affected fathers pass it to all their daughters