DNA Mutations

Question 1

Which is a point mutation and not a frameshift mutation?

Revolt · Accepted Answer

silent

Question 2

Which is considered a chemical mutagen?

Revolt · Accepted Answer

tobacco

Question 3

Which statement is scientifically based?

Revolt · Accepted Answer

Mutations rarely occur.

Question 4

A mutagen is

Revolt · Accepted Answer

an agent that causes a mutation in DNA.

Question 5

A point mutation changes the DNA sequence CGA to CGT, but the same protein is still produced. Which point mutation occurred?

Revolt · Accepted Answer

silent

Question 6

Which best describes somatic mutations?

Revolt · Accepted Answer

They can cause different kinds of cancer.

Question 7

Ji wants to write an example of a frameshift mutation using the following sentence: THE CAT SAW THE RAT. Which sentence best shows a frameshift mutation?

Revolt · Accepted Answer

THC ATS AWT HER AT.

Question 8

A scientist thinks that a certain chemical is a mutagen. She exposes plant cells to a large amount of this chemical in the laboratory. Which statement best provides evidence that the substance is a mutagen?

Revolt · Accepted Answer

The cells change after being exposed to the chemical, and this change is passed to the next generation of cells.

Question 9

Many different types of mutations can occur within the body. Tay-Sachs disease is a deadly disorder that is caused by a missing codon in the gene coding for production of the hex A enzyme in the body. Which type of mutation is responsible for causing Tay-Sachs disease?

Revolt · Accepted Answer

deletion

DNA Mutations Answers

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