14.6 DNA Repair

Question 1

proofreading

Answer 1

function of DNA pol in which it reads the
newly added base before adding the next one

Question 2

mismatch repair

Answer 2

type of repair mechanism in which
mismatched bases are removed after replication

Question 3

nucleotide excision repair

Answer 3

type of DNA repair mechanism in which the wrong base, along with a few nucleotides upstream or downstream, are remove

Question 4

Mutations

Answer 4

variations in the nucleotide sequence of a genome, can also occur because of damage to DNA

Question 5

Induced mutations

Answer 5

result from an exposure to chemicals, UV rays, x-rays, or some other environmental agent

Question 6

Spontaneous mutations

Answer 6

they are a result of natural reactions taking
place within the body

Question 7

. Transition substitution

Answer 7

a purine or pyrimidine being replaced by a base of the same kind;
for example, a purine such as adenine may be replaced by the purine guanine

Question 8

Transversion substitution

Answer 8

when a purine is replaced by a
pyrimidine or a pyrimidine is replaced by a purine