Lecture 21

Question 1

Pedigree chart

Answer 1

Family tree that displays members of a family affected by a genetic trait controlled by a single gene

Roman numeral indicate generation

Digit indicates individual in a generation

Circles are females. Squares are males

Horizontal lines are mated pairs

Heterozygous individual MAY be half shaded

Question 2

Inheritance of a trait is autosomal if

Answer 2

Dominant and recessive traits that affects fathers and mothers tend to be transmitted to the phenotype of both sons and daughters equally well

If it’s determined by an autosomal gene then you need to determine if the disease allele is dominant or recessive