Shown below is a list of statements (a-k) and types of mutations (1-4). On the b

Question

Shown below is a list of statements (a-k) and types of mutations (1-4). On the blank line following each mutation, write the letter(s) of all statements that apply to that type of mutation. You will need to refer to the genetic code handout to answer some of the questions. Hint: Each statement may be used more than once and each type of mutation may have more than one correct statement. (4pts)

a) A mutation that changes CAA to CAG

b) A mutation that gives methionine instead of lysine

c) Created by the deletion of a nucleotide from a coding region

d) A chemically similar amino acid is replaced by the mutation

e) Mutation does not alter the peptide

f) A mutation changing CGA to UGA

g) Premature termination codon is responsible for this mutation

h) A chemically different amino acid is replaced by the mutation

1) Missense mutation

2) Silent mutation   

3) Frameshift mutation

4) Nonsense mutation

Explanation / Answer

A-2

B-1

C-3

D-2

E-2

F-4

G-4

H-1

Note - when stop codon is coded- it is non sense mutation

When same amino acid is coded it is silent mutation

When different AA is coded it is missense mutation

Any deletion or insertion result in frame shuft.

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