NEW
Font size
S
M
L
XL
WorksheetsChap 7 : Mutation (Gene Mutation)
Total questions: 10
Worksheet time: 5mins
Name
Class
Date
1.
Where do mutations occur?
a)
DNA and RNA
b)
DNA
c)
RNA
d)
mRNA and tRNA
2.
This type of substitution codes for a stop codon
a)
Missense
b)
Nonsense
c)
Silent
d)
Deletion
3.
A type of substitution in which no amino acids change is called
a)
Missense
b)
Nonsense
c)
Silent
d)
Deletion
4.
DNA molecule segment is : TTACGCAAG
The mutated DNA segment is TTACGCAAC. This is an example of ___ mutation.
The mutated DNA segment is TTACGCAAC. This is an example of ___ mutation.
a)
Base Substitution
b)
Base Insertion
c)
Base Inversion
d)
Translocation
5.
ATTTGAGCC- Original
ATTGAGCC - Mutated
The example above is an example of a
ATTGAGCC - Mutated
The example above is an example of a
a)
Insertion- Frameshift
b)
Deletion- Substitution
c)
Deletion -Frameshift
d)
All of the above
6.
Mutations that occur at a single point in the DNA sequence are:
a)
frameshift
b)
point
c)
deletion
7.
Why are insertion and deletion (frameshift) mutations so harmful?
a)
They change all of the codons from the mutation on down the line, which changes the amino acid sequence
b)
They insert things that an organism doesn't need.
c)
They often delete things that organisms need.
d)
Insertion and deletions are not any more harmful than substitution mutations.
8.
When a nucleotide is added to a DNA sequence, which of the following will occur?
a)
Point Mutation
b)
Silent Mutation
c)
Frameshift Mutation
d)
Gene Duplication
9.
A point mutation that does not change the amino acid sequence is known as a(n) ____________ mutation.
a)
Frameshift
b)
Nondisjunction
c)
Inversion
d)
Silent
10.
What type of chromosomal mutation is this?
a)
Translocation
b)
Inversion
c)
Deletion
d)
Duplication
Reset
