Introduction to Mutations

Multiple Choice

Variations in DNA base sequences are called

• mutations.

• duplications.

• replication.

• none of the answers are correct

Multiple Choice

A __ mutation occurs at a single point in the DNA sequence.

• chromosomal

• point

• frame shift

Multiple Choice

If a gene in one cell is altered, the alteration ____ be passed on to every cell that develops from the original cell.

• can

• cannot

Multiple Choice

Which of the following images is a INSERTION?

Multiple Choice

Which of the following images is a DELETION?

Multiple Choice

Which of the following images is a SUBSTITUTION?

Multiple Choice

These mutations can change the __ of genes on chromosomes and can even change the number of copies of some genes.

• size

• location

• type

Multiple Choice

Which of the following statements is a DELETION?

• Produces an extra copy of all or part of a chromosome.

• Reverses the direction of parts of a chromosome.

• Involves the loss of all or part of a chromosome.

• Occurs when part of one chromosome breaks off and attaches to another.

Multiple Choice

Which of the following statements is a TRANSLOCATION?

• Produces an extra copy of all or part of a chromosome.

• Reverses the direction of parts of a chromosome.

• Involves the loss of all or part of a chromosome.

• Occurs when part of one chromosome breaks off and attaches to another.

Multiple Choice

Which of the following statements is a DUPLICATION?

• Produces an extra copy of all or part of a chromosome.

• Reverses the direction of parts of a chromosome.

• Involves the loss of all or part of a chromosome.

• Occurs when part of one chromosome breaks off and attaches to another.

Multiple Choice

Which of the following statements is a INVERSION?

• Produces an extra copy of all or part of a chromosome.

• Reverses the direction of parts of a chromosome.

• Involves the loss of all or part of a chromosome.

• Occurs when part of one chromosome breaks off and attaches to another.

Multiple Choice

Cellular machinery that replicates DNA inserts an incorrect base roughly once in every 10 ___ bases.

• billion

• million

• thousand

• quadrillion

Multiple Choice

Mutagens are

• chemical agents in the environment.

• physical agents in the environment.

• both chemical and physical agents in the environment.

• none of the answer are correct.

Open Ended

What happens when the cell can not repair the damage done by a mutagen?

Multiple Choice

Organisms cannot evolve without mutagens.

• This is a True statement.

• This is a False statement.

Multiple Select

Some of the most harmful mutations are those that ...

(select ALL that apply)

• dramatically change protein structure.

• those that are repetitive in nature.

• those that change gene activity.

• those that are found in plants only.

Multiple Choice

Sickle cell disease is caused by a ___ mutation.

• frameshift

• point

• polyploidy

• none of the answers are correct

Multiple Choice

Some mutations can be to the benefit of the species.

• FALSE

• TRUE

Multiple Choice

Polyploidy is a condition in which an organism has

• extra set of chromosomes.

• missing chromosomes.