The tandemly repetitive DNA at the end of a eukaryotic chromosome’s DNA molecule.Group of answer choicesnucleosomehistonetelomereOkazaki fragmentprimerNext

The correct answer to your question is telomere.

Explanation:

Telomeres are repetitive nucleotide sequences located at the ends of eukaryotic chromosomes. They serve to protect the chromosome from deterioration or from fusion with neighboring chromosomes. Telomeres play a critical role in cellular aging and replicative senescence. Over time, as cells divide, telomeres shorten, which is associated with aging and limited cell division capacity.

Here’s a brief overview of the other terms for context:

1. Nucleosome: This is the fundamental unit of chromatin, consisting of a segment of DNA wound around a core of histone proteins.
2. Histone: These are proteins that help package and order DNA into structural units called nucleosomes.
3. Okazaki fragment: These are short segments of DNA synthesized on the lagging strand during DNA replication.
4. Primer: This is a short nucleic acid sequence that provides a starting point for DNA synthesis.

In summary, in relation to the structure of eukaryotic chromosomes, telomeres are specifically the repetitive sequences at their ends.