CHP 6

Question 1

Liability

Answer 1

A variable that underlying risk factors contribute to

Question 2

concordance rate

Answer 2

fraction of twin pairs in which both of them show the trait, among pairs in which at least one of them does

Question 3

Broad sense heritability

Answer 3

The total phenotypic variance that is due to genetic differences among individuals in a population

Question 4

Predicting phenotypes from genotypes

Answer 4

• dominance limits the ability to make predictions about phenotype’s based on genetypes
• codominance allows more precise predictions to be made

Question 5

Va

Answer 5

additive genetic variance - represents variance due to alleles that act additively

Question 6

Vd

Answer 6

dominance variance - represents variance due to dominance(ABO blood group)

Question 7

Vi

Answer 7

epistatic variance - represents variance due to epistatic interactions between alleles of different genes