Mutations Quiz

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 are found in plants only.

Some humans have attached earlobes; some humans have detached earlobes. Is this beneficial, neutral, or harmful?

• beneficial

• neutral

• harmful

What do beneficial mutations do?

• increase chances of survival

• increase risk of cancer

• decreases chances of survival

• nothing

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.

___ mutations are neither helpful nor harmful

• beneficial

• neutral

• detrimental

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.

Variations in DNA base sequences are called

• mutations.

• duplications.

• replication.

• none of the answers are correct

Original Strand: TTC-GAT-AAA

New Strand: TTG-ATA-AA

What type of mutation is this?

• insertion

• deletion

• substitution

A mutation is best described as:

• the formation of a DNA sequence

• a change in a DNA sequence

• the base of a DNA sequence

• the copy of a DNA sequence

Which of the following images is a DELETION?

• 
• 
•