M7 L29

Question 1

transition

Answer 1

purine to purine substitutions
or
pyrimidine to pyrimidine

Question 2

transversions

Answer 2

purine to pyrimidines or vice versa

Question 3

function (causal)

Answer 3

for a gene to have a function it is necessary and sufficient for a gene to be linked to an activity

Question 4

function (selected effect)

Answer 4

for a gene to have a function the gene must be linked to an activity and activity function is maintained by negative selection