Telomerase, an RNA-protein complex which completes the replication of telomeres during DNA synthesis, is a specialised
RNA dependent DNA polymerase.
DNA dependent DNA polymerase.
DNA dependent RNA polymerase.
RNA dependent RNA polymerase
Telomerase contains both protein and RNA components. The RNA component serves as a template for the synthesis of DNA, while the protein component has various functions, including the catalytic activity required for telomere elongation.
Telomerase adds repetitive DNA sequences (telomeric repeats) to the ends of chromosomes, known as telomeres. This process counteracts the loss of DNA sequence that occurs during replication, as the conventional DNA replication machinery cannot fully replicate the ends of linear chromosomes.
While telomerase has reverse transcriptase activity, it is not considered an RNA-dependent DNA polymerase. Reverse transcriptases typically use an RNA template to synthesize DNA, but telomerase's primary function is to elongate telomeres rather than replicate RNA templates.
Hence, the correct answer is option 1.