Part J: Lecture 29

Question 1

gene interactions don’t depend on ___

Answer 1

where the gene is

Question 2

any genes whose ________ will interact

Answer 2

whose proteins are in the same pathway

Question 3

penetrance (def.)

Answer 3

% of the individuals with mutant allele that have mutant phenotype

Question 4

complete penetrance (def.)

Answer 4

has mutant allele = has mutant phenotype

Question 5

incomplete penetrance (def.)

Answer 5

has mutant allele= may not have mutant phenotype

Question 6

expressivity (def.)

Answer 6

how much mutant phenotype varies (ex. severity)

Question 7

narrow expressivity (def.)

Answer 7

has mutant allele = has mutant phenotype (same severity)

Question 8

broad expressivity (def.)

Answer 8

has mutant allele = has mutant phenotype (different severity)

Question 9

reasons for variations in phenotypes

Answer 9

-random chance (mutation)
-genetic background (other genes alter gene of interest)
-age (ripening bell peppers)
-environment (acidic soil)