NEW
Font size
WorksheetsGenetic Mutation
Total questions: 15
Worksheet time: 15mins
deletion mutation occurs when
base pair is missing from the DNA strand
base pair is added to the DNA strand
base pair is replaced with a different base pair
A mutation that has NO effect on an organism's ability to survive and reproduce
harmful mutation
helpful mutation
neutral mutation
In the video, Tim says that genetic mutations are permanent changes to DNA or RNA. What does this mean?
The changes are minor
The changes can't be undone.
The changes are major.
The changes can be undone.
Which of the following is an example of a beneficial mutation?
When an organism's lifespan becomes shorter.
When an organism becomes unable to reproduce.
When an organism's body becomes deformed.
When an organism develops immunity to a disease.
When a beneficial (adaptive) mutation spreads through an entire population of organisms, that population:
Becomes less common
Becomes more common
Goes extinct
Keeps mutating
An insertion/additon mutation occurs when
a base pair is missing from the DNA strand
a base pair is added to the DNA strand
a base pair is replaced with a different base pair
A mutation that helps an organism survive and reproduce
harmful mutation
helpful mutation
neutral mutation
A mutation that decreases an organism's ability to survive and reproduce
harmful mutation
helpful mutation
neutral mutation
Why do most changes to DNA have NO effect at all?
Because they're too minor to have any effect
Because the changes are offset by RNA, which cannot change
Because the changes are quickly repaired
Because the changes only occur in a few cells
What usually happens to a cell whose DNA has been damaged?
It has trouble manufacturing certain proteins
Its genetic material leaves the nucleus
It is able to produce twice as many proteins as a normal cell
It shrinks to half its normal size
What is a point mutation?
A change in a single nucleotide base pair in DNA
A large segment of DNA is duplicated
A segment of DNA is deleted
A segment of DNA is inverted
Which type of mutation is most likely to result in a frameshift?
Substitution
Insertion
Silent mutation
Neutral mutation
How can a mutation in a non-coding region of DNA affect an organism?
It cannot affect the organism at all
It can affect gene regulation and expression
It always leads to a harmful mutation
It results in a beneficial mutation
What is the role of mutagens in genetic mutation?
They repair DNA
They cause changes in the DNA sequence
They prevent mutations
They have no effect on DNA
Which of the following is an example of a beneficial mutation?
Sickle cell trait providing malaria resistance
Cystic fibrosis mutation
Huntington's disease mutation
Albinism
