What is telomeric DNA?
A telomere is a region of repetitive DNA sequences at the end of a chromosome. Telomeres protect the ends of chromosomes from becoming frayed or tangled. Each time a cell divides, the telomeres become slightly shorter. Eventually, they become so short that the cell can no longer divide successfully, and the cell dies.
What is a telomere quizlet?
A telomere is a region of. repetitive nucleotide sequences at each end of a chromosome. Telomere shortening occurs on the. Lagging strand of DNA during DNA replication. If telomeres were not on the ends of chromosomes.
What is a telomere the mechanism quizlet?
STUDY. What is a telomere? A region of repetitive nucleotide sequences (single-stranded) at the end of a chromatid.
What is a telomere and what does it do for us quizlet?
Telomeres. Specialized repetitive sequences at the ends of chromosomes. -Protect the ends of chromosomes.
Where is telomeric DNA located?
The telomere is a nucleoprotein complex located at the ends of eukaryotic chromosomes. It is essential for maintaining the integrity of the genome. It is not a linear structure and, for much of the cell cycle, telomeric DNA is maintained in a loop structure, which serves to protect the vulnerable ends of chromosomes.
What is a telomere and why is it important?
Telomeres, the specific DNA–protein structures found at both ends of each chromosome, protect genome from nucleolytic degradation, unnecessary recombination, repair, and interchromosomal fusion. Telomeres therefore play a vital role in preserving the information in our genome.
What are the telomeres and why are they important?
What is the role of telomerase in DNA replication quizlet?
telomerase adds DNA nucleotides to the overhang and DNA polymerase extends the complimentary strand.
What is the structure of telomeres quizlet?
What is the definition of telomeres? A telomere is whatever structure is present at the natural end of a linear chromosome that enables it to behave differently from a simple double-stranded DNA break in the genome.
What do telomeres do?
A telomere is a repeating DNA sequence (for example, TTAGGG) at the end of the body’s chromosomes. The telomere can reach a length of 15,000 base pairs. Telomeres function by preventing chromosomes from losing base pair sequences at their ends. They also stop chromosomes from fusing to each other.
What is a telomeres function?
The major role of telomeres is to cap the chromosome ends to minimize the loss of DNA during rounds of cell replication.
How does a telomere protect DNA?
Telomeres can be thought of as protective caps for chromosomes that are composed of repeated DNA sequences bound by a series of specialized telomere proteins (Fig. 1) [1]. The telomere proteins prevent the chromosome terminus from being seen as DNA damage and initiating a DNA damage response.
What is the function of telomerase Quizlet?
With telomerase, the problem is not solved, but rather balanced. Telomerase allows for telomere length and equilibrium maintenance by adding on repeats to the end of the chromosome. What is telomerase made up of?
Are telomeres conserved in DNA replication?
False. They are conserved. What are telomeres made up of? What host proteins bind to telomeres? Simple DNA repeats bound by specific proteins (Shelterin Complex). These proteins are also necessary to interact with telomerase. What is the end replication problem?
Do all chromosomes have the same length of telomeres?
T/F Each chromosome has the same telomere length. Each end of a single chromosome is the same length. T/F Telomere length is maintained as an equilibrium. In fact, telomeres have set points, which vary between species. T/F Many telomeres need to added on during each cycle to maintain equilibrium. False – only a few repeated needed.
Do telomeres have a set point?
In fact, telomeres have set points, which vary between species. T/F Many telomeres need to added on during each cycle to maintain equilibrium. False – only a few repeated needed.