The significance of telomeres Flashcards
Telomeres are located…
on the ends of chromosomes.
Telomeres are made of…
DNA with short base sequences that are repeated many times.
In telomeres one strand of DNA is…
rich in the base guanine (G) and the other strand with complementary base cytosine.
The function of telomeres is to ensure that…
when DNA is replicated, the ends of the molecule are also included and not left out.
The copying enzyme of DNA cannot…
run to the end of the DNA and complete the replication.
If the part of DNA is not copied it is…
lost. So at each division, another small section of DNA would be lost.
Telomeres make the DNA a bit…
longer by adding more bases. They have no useful information.
Telomerase is the enzyme that…
adds extra bases(telomere) to the ends of DNA during the cell cycle.
Telomeres also prevent…
recombination, the end-end fusion of DNA and degradation.
The chromatid has a sticky end without…
telomere.
Sticky end of chromatid could stick to another…
chromatid. Resulting in ripped chromosome after mitosis.
