CHAPTER 7 MUTATION

Categorize

Options (6)

X-rays

UV rays

Gamma rays

Mustard gas

Nitrous acid

Colchicine

​  Drag and drop each item to its correct category: Physical Mutagen or Chemical Mutagen.

Physical Mutagen

Chemical Mutagen

Multiple Choice

Which of the following is NOT a type of chromosomal mutation?

• Deletion

• Translocation

• Base substitution

• Duplication

Multiple Choice

Which of the following is an example of a gene mutation?

• Deletion of a whole chromosome

• Translocation of a chromosome segment

• Base substitution in a DNA sequence

• Duplication of a chromosome

Multiple Choice

A missense mutation always results in a completely nonfunctional protein.

True or False

• True

• False

Fill in the Blanks

A frameshift mutation is caused by the insertion or

of one or more nucleotide base pairs, but not in multiples of three.

Multiple Choice

What is the main consequence of a frameshift mutation caused by base insertion or deletion?

• A single amino acid is replaced by another.

• The entire reading frame is shifted, potentially altering every amino acid after the mutation.

• The reading frame is unaffected.

• The DNA sequence remains unchanged.

Multiple Choice

Which of the following is an example of a chromosomal mutation caused by an alteration in chromosome number?

• Inversion

• Translocation

• Trisomy 21 (Down Syndrome)

• Deletion

Multiple Choice

Aneuploidy refers to a condition where there is a change in the structure of chromosomes but not the number of chromosomes.

True or false?

• True

• False

Match

Match the followingMatch the following chromosomal abnormalities to their corresponding descriptions:

• Monosomy

• Trisomy 21

• Translocation

• Duplication

Only one chromosome present

Extra chromosome (47 total)

Part of a chromosome moves to another

Part of a chromosome is copied

• Only one chromosome present

• Extra chromosome (47 total)

• Part of a chromosome moves to another

• Part of a chromosome is copied

Multiple Choice

Which of the following conditions is an example of aneuploidy, where there is an abnormal number of chromosomes?

• Klinefelter Syndrome (XXY)

• Translocation

• Inversion

• Silent mutation