Telomerase: a) contains a DNA template for telomere synthesis. O b) is not required to maintain telomere structure. O c) contains an RNA template for telomere synthesis. O d) adds a short sequence to the 5' end of a chromosome. O e) is required in both eukaryotic and prokaryotic DNA replication.
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Step 1: Telomerase is an enzyme that is involved in maintaining the length of telomeres, which are the protective caps at the end of chromosomes. Show more…
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The enzyme telomerase uses mechanisms that involve: a. Repeating sequences at the telomeres. b. Having RNA oligonucleotides to act as templates as part of the enzyme. c. All of these. d. Both repeating sequences at the end of chromosomes and RNA oligonucleotides to act as templates as part of the enzyme. e. Allowing the end of the chromosome to get a little shorter each time a cell divides.
Danielle A.
Telomeres a. are found in prokaryotic and eukaryotic cells. b. shorten with each round of DNA replication in most somatic cells. c. contain essential genes. d. are A-T-rich regions where DNA replication starts in eukaryotes.
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A. Explain why telomeres and telomerase are needed for replication of eukaryotic chromosomes but not for replication of a circular bacterial chromosome. Draw a diagram to illustrate your explanation. B. Would you still need telomeres and telomerase to complete eukaryotic chromosome replication if primase always laid down the RNA primer at the very $3^{\prime}$ end of the template for the lagging strand?
Bryan V.
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