DNA Mutations

Question 1

A mutagen is

Revolt · Accepted Answer

an agent that causes a mutation in DNA.

Question 2

Which type of mutation always produces a stop codon?

Revolt · Accepted Answer

nonsense

Question 3

Which statement is scientifically based?

Revolt · Accepted Answer

Mutations rarely occur.

Question 4

Which best describes somatic mutations?

Revolt · Accepted Answer

They can cause different kinds of cancer.

Question 5

Which type of mutation occurs only in reproductive cells?

Revolt · Accepted Answer

germline mutation

Question 6

Which best describes genetic mutations?

Revolt · Accepted Answer

Some inherited genetic mutations can be good for the offspring.

Question 7

Which type of mutation occurs only in gametes?

Revolt · Accepted Answer

germline mutation

Question 8

The DNA sequence reads ACGTTCATT before a mutation occurs. After the mutation, the DNA sequence reads ATCGTTCATT. Which type of mutation occurred?

Revolt · Accepted Answer

insertion

Question 9

Many different types of mutations can occur within the body. Sickle cell anemia is a disease that occurs when a mutation in a base pair of the hemoglobin beta gene causes a single replacement of the amino acid glutamic acid by the amino acid valine. As a result of this mutation, the individual’s blood cells take on a sickle shape under certain conditions and form clusters that can block blood vessels and cause organ damage. Which type of mutation causes sickle cell anemia?

Revolt · Accepted Answer

missense

Question 10

Which is a point mutation and not a frameshift mutation?

Revolt · Accepted Answer

silent

DNA Mutations Answers

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