Module 7 - Part 2

Question 1

heritability (broad sense H2)

Answer 1

the proportion of variation in a phenotype that is due to the variation in genotype (rather than environment)

Question 2

H2 formula (H2 = )

Answer 2

= genetic variance (Vg) / phenotypic variance (Vp)
where Vp = Vg + environmental variance (Ve)

Question 3

__ < H2 < ___

Answer 3

0 < H2 < 1

Question 4

H2 = 0 means

Answer 4

all variation in phenotype is due to differences on the environment

Question 5

H2 = 1 means

Answer 5

all variation in phenotype is due to genetic variation

Question 6

heritability of height = 70% means

Answer 6

0.7 of variability in the trait comes from genetic differences
0.3 of variability in the trait comes from differences in the environment