Question

what is the function of telomeres?
a. they help align sister chromatids during cell division.
b. they code for proteins that do not affect traits.
c. they help dna coil more tightly to fit inside a cell.
d. they protect the ends of the coding sections of dna from damage.

Explanation:

Telomeres are repetitive nucleotide sequences at the ends of chromosomes. They act as protective caps. When DNA replicates, the ends of the DNA (coding regions) can get damaged. Telomeres, being non - coding, are sacrificed instead of the coding regions.

• Option A: Centromeres (not telomeres) help in aligning sister chromatids during cell division.
• Option B: Telomeres are non - coding regions. They do not code for proteins.
• Option C: Histones (not telomeres) help DNA coil more tightly to fit inside a cell.
• Option D: Telomeres protect the ends of the coding sections of DNA from damage.

Answer:

D. They protect the ends of the coding sections of DNA from damage.