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: Understanding the Concept:
Satellite DNA consists of large arrays of tandemly repeating DNA sequences. In humans, a specific type of satellite DNA is essential for the structure and function of centromeres.
Step 2: Detailed Explanation:


The centromeric regions of human chromosomes are defined by a specific family of tandemly repeated satellite DNA known as alpha-satellite DNA, or alphoid DNA.

This DNA consists of repeats of a ~171 base pair monomer unit, which are organized into higher-order arrays.

Alphoid DNA is crucial for the assembly of the kinetochore, the protein structure that attaches to spindle fibers during cell division.

The other names (Quinoid, Deltoid, Trepizoid) are fictional distractors.

Step 3: Final Answer:
The most recognized satellite DNA sequence in human centromeres is the Alphoid family.