Question

The nucleoprotein structure that occur at the ends of chromosomes are?

• A. Centrosomes
• B. Telomeres
• C. Centromere
• D. Satellites

Answer 1

The correct option is B Telomeres

Telomeres are essential nucleoprotein structures at the ends of eukaryotic chromosomes. They play several essential roles preserving genome stability and function, including distinguishing chromosome ends from DNA double-stranded breaks (DSBs) and maintenance of chromosome length.

The centromere is the point of attachment of the kinetochore, a structure to which the microtubules of the mitotic spindle become anchored.

Satellite DNA consists of very large arrays of tandemly repeating, non-coding DNA. Satellite DNA is the main component of functional centromeres, and form the main structural constituent of heterochromatin. So, the correct answer is (B)