Pedigree interpretation

Question 1

Sex influenced traits

Answer 1

Encoded by autosomal genes whose expressino is influenced by the sec of the individual (Maybe dominant for one sex, recessive for another)

Question 2

Sex limited traits

Answer 2

Encoded by autosomal genes whose expression is isolated to one sex (but carried by both)

Question 3

Genetic maternal effect

Answer 3

Phenotype of the offspring is determined by the genotype of the mother (Genes are still inherited from both parents)Ex

Question 4

Expression can also be influenced by ___________. EG

Answer 4

Environmental effects- temperature sensitive allele whose product is only functional at certain temperatures

Question 5

Y linked traits

Answer 5

Fathers pass on to all sons

Question 6

Autosomal dominant

Answer 6

Males and females equally affected, unaffected don’t pass down, affected have at least one affected parent

Question 7

Autosomal recessive

Answer 7

Males and females equally affected, usually skip gens, more common with incest

Question 8

X linked dominant

Answer 8

Fathers pass on to all daughters (no sons), affected moms pass onto 1/2 of sons/ 1/2 daughters

Question 9

X linked recessive

Answer 9

Affected fathers pass to sons, carrier moms can pass to affected sons. More common in men.