Chromosomal Mutations

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-LS3-2

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

Inversion

• A

• B

• C

• D

Answer explanation

The correct answer is D because it accurately represents the concept of inversion, which involves reversing the order or position of elements. Choices A, B, and C do not correctly illustrate this concept.

Tags

NGSS.MS-LS3-1

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-LS3-2

NGSS.HS-LS3-1

Translocation

• A

• B

• C

• D

• E

Answer explanation

Translocation refers to the movement of substances within an organism. Choices D and E correctly relate to this concept, highlighting processes involved in the transport of nutrients and genetic material.

Tags

NGSS.HS-LS3-2

NGSS.HS-LS3-1

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-LS3-2

NGSS.HS-LS3-1

Inversion

• A

• B

• C

• D

Answer explanation

The correct answer is C because it accurately represents the concept of inversion, which involves reversing the order of elements. Choices A, B, and D do not correctly illustrate this concept.

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 duplication, where a segment of the chromosome is copied, resulting in extra genetic material. This is distinct from deletion, inversion, or translocation, which involve different structural changes.

Tags

B.6E

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

What type of mutation is this?

• Duplication

• Inversion

• Deletion

• Translocation

• none

Answer explanation

Translocation is a type of mutation where a segment of DNA is moved from one location to another, either within the same chromosome or to a different chromosome. This distinguishes it from duplication, inversion, and deletion.

Tags

B.6E