Question

Satellite DNA is useful tool in

• A. Genetic engineering
• B. Organ transplantation
• C. Sex determination
• D. Forensic science

Answer 1

The correct option is D

Forensic science

The correct option is option D.

Explanation of correct option:

1. Short repetitive DNA sequences are known as satellite DNA.
2. They help in chromosome segregation, and genome organization.
3. Even it does not encode proteins.
4. Generally, satellite DNA represents relative uniformity within species and great variability between closely related species.
5. This polymorphism in DNA is used in the identification of the suspect by DNA fingerprinting.
6. It is used as a useful tool in forensic science.

Explanation of incorrect options:

Option A:

1. Genetic engineering is based on transferring a recombinant gene to another organism.
2. The gene transfer is done to get desired products.
3. As satellite DNA does not encode proteins so it is not useful in genetic engineering.

Option B:

1. Organ transplantation is a medical therapy in which an organ is removed from a person and placed in another body.
2. This procedure fully aims at the immune system.
3. Satellite DNA is not a part of it.

Option C:

1. Sex determination in humans is controlled by the presence of the X and Y chromosomes.
2. It is not governed by satellite DNA.

Final answer: Satellite DNA is a useful tool in forensic science.