pedigrees

Question 1

autosomal dominant

Answer 1

• occurs in every gen
• males & females equally affected
• genotype - AA, Aa

Question 2

autosomal recessive

Answer 2

• skips gen’s
• males & females affected equally
• genotype - aa

Question 3

x-linked dominant

Answer 3

• carried on x chromosome
• males w trait dont pass to son
• all affected males have affected mothers
• affected female genotype - X^AX^A, X^AX^a
• affected male genotype - X^AY

Question 4

x-linked recessive

Answer 4

• x chromosome
• males likely affected
• affected female genotype - X^aX^a
• affected male genotype - X^aY
• females can be carriers - X^AX^a