What is the function of the telomere cap at the ends of eukaryotic linear chromosomes?
Answer and explanation
Correct answer: C. Protects chromosome ends from degradation and prevents end-to-end chromosomal fusion
- Step 1: Telomeres consist of repetitive non-coding sequences (TTAGGG in humans) bound by shelterin protein complexes. Step 2. They prevent chromosome ends from being recognized as double-strand DNA breaks and protect against degradation. Answer: Protects chromosome ends from degradation and prevents end-to-end chromosomal fusion. Why not the others: Nucleolus initiates rRNA transcription; centromere attaches spindle microtubules; telomeres do not encode mitochondrial enzymes.
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