changes in genetic code

Question 1

define mutations

Answer 1

changes in genetic code

Question 2

define mutatnt

Answer 2

organism with a mutation

Question 3

define wild-type

Answer 3

organism without mutation

Question 4

what effects can happen with a mutation of a gene?

Answer 4

alter product of gene
prevent gene from functioning properly or completely
or have no effect

Question 5

how many types of mutations

Answer 5

3

Question 6

name the mutations

Answer 6

point, frameshift, deletion

Question 7

describe point mutation

Answer 7

addition, deletion or substitution of a base can have different results

Question 8

how many results can occur from a point mutation

Answer 8

3

Question 9

name the results that can occur from a point mutation

Answer 9

nonsense
missense
silent

Question 10

describe nonsense

Answer 10

changes normal codon to stop codon

Question 11

describe missense

Answer 11

change in a single amino acid

Question 12

describe silent mutation

Answer 12

changes amino acid codon but not the amino acid

Question 13

what is a deletion

Answer 13

removal of one or more nucleotide from the DNA

Question 14

what can deletions alter?

Answer 14

alter frame of reading

Question 15

is a deletion reversible or irreversible

Answer 15

irreversible

Question 16

what is a frameshift mutation due to?

Answer 16

due to deletion or addition of bases

Question 17

what can a frame shift mutation do?

Answer 17

alter way in which triplets are read
alters Amino acid codons
alters ultimately the gene product

Question 18

name the mechanisms of mutation

Answer 18

spontaneous

mutagens

Question 19

how many mechanisms of mutation are there?

Answer 19

2

Question 20

describe spontaneous mutation

Answer 20

DNA replication and repair

erroneous base pairing

Question 21

describe mutagen mutation

Answer 21

chemical, radiation