Question

In humans, one of the most recognized satellite DNA sequences, found mainly in the centromere region is:

• A. Quinoid family
• B. Deltoid family
• C. Alphoid family
• D. Trepizoid family

Hint:

For human genetics, link "alphoid DNA" or "alpha-satellite DNA" directly with the centromere. It's the key repetitive sequence that defines the centromere's identity and function.

Answer 1

The Correct Option is C

Step 1: Concept Overview:
Satellite DNA is characterized by long stretches of repeating DNA sequences. In humans, a particular satellite DNA type plays a key role in centromere structure and function.
Step 2: In-Depth Explanation:


Human chromosome centromeres are characterized by alpha-satellite DNA, also known as alphoid DNA, a specific type of tandemly repeated satellite DNA.

This DNA is composed of ~171 base pair monomer repeats, arranged in complex arrays.

Alphoid DNA is vital for kinetochore assembly, the protein structure that connects to spindle fibers during cell division.

The terms Quinoid, Deltoid, and Trepizoid are incorrect and used as distractors.

Step 3: Conclusion:
Alphoid DNA is the most well-known satellite DNA sequence found in human centromeres.