Chromosomal Mutation

An example of a mutation where a piece of chromosome breaks off and attaches to another chromosome is called ___.

• trisomy

• translocation

• inversion

• deletion

Answer explanation

A translocation is a type of mutation where a segment of a chromosome breaks off and attaches to another chromosome. This distinguishes it from other mutations like deletion or inversion.

Tags

NGSS.HS-LS3-2

Notice the abnormal 23rd chromosome. This individual has an extra X chromosome. What type of mutation is this?

• Translocation

• Nondisjunction

• Dublication

• Inversion

• Deletion

Answer explanation

Nondisjunction is the failure of chromosomes to separate properly during cell division, leading to an extra chromosome, such as an additional X chromosome. This explains the abnormal 23rd chromosome observed in this individual.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Deletion

• A

• B

• C

• D

Answer explanation

Choice A is correct because it directly addresses the concept of deletion, which is the focus of the question. The other options do not relate to the topic as clearly as A does.

Tags

NGSS.HS-LS3-2

Translocation

• A

• B

• C

• D

Answer explanation

Translocation refers to the movement of substances within an organism. Option B correctly defines this process, while the other options do not accurately describe translocation.

Tags

NGSS.HS-LS3-2

Duplication

• A

• B

• C

• D

• E

Answer explanation

Choice A is correct because it directly addresses the concept of duplication, which is the focus of the question. The other options do not relate to the definition or implications of duplication.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Inversion

• A

• B

• C

• D

• E

Answer explanation

The correct answer is B because it accurately represents the concept of inversion, which involves reversing the order of elements. Other options do not align with this definition.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Duplication

• A

• B

• C

• D

Answer explanation

Choice B is correct as it accurately represents the concept of duplication, which involves repeating or copying something. The other options do not align with this definition.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Translocation

• A

• B

• C

• D

Answer explanation

Translocation refers to the movement of substances within an organism. Option D correctly identifies this process, while the other choices do not accurately describe translocation.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

A chromosome is found to be shorter than it's homologous match.  Which type of mutation would this most likely be?

• insertion

• deletion

• translocation

• inversion

Answer explanation

A chromosome shorter than its homologous match indicates that genetic material has been lost. This is characteristic of a deletion mutation, where a segment of DNA is removed, resulting in a shorter chromosome.

Tags

NGSS.HS-LS3-2

The chromosomal mutation shown in the image is a

• deletion

• duplication

• inversion

• translocation

Answer explanation

The chromosomal mutation depicted is a deletion, which involves the loss of a segment of the chromosome. This results in missing genetic material, distinguishing it from duplication, inversion, or translocation.

Tags

B.6E