SG 8.3

Question 1

Autosomal recessive

Answer 1

Inherits 2 copies of the mutated gene

Question 2

Autosomal dominant

Answer 2

Inherits 1 copy of the mutated gene

Question 3

X-linked trait

Answer 3

A mutation in a gene on the X chromosome.

Question 4

Y-linked trait

Answer 4

Mutation located on the Y chromosome and only affects males.

Question 5

Step 1

Answer 5

Identify affected individuals

Question 6

Step 2

Answer 6

Looks for patterns in the pedigree

Question 7

Step 3

Answer 7

Check for parental genotypes