what your source, cause this card is opposite of 1554353457143
{{c1::Telomeres}} are at the {{c4::ends}} of chromosomes and contain high {{c2::GC}}-content to prevent {{c3::unraveling of the DNA}}.
In the UWorld Biology textbook, Chapter 1, Section 2 - DNA Replication, on page 15, in Figure 1.15, the sequence is stated there. One question I got wrong in the Blueprint QBank was asking about that specific sequence.
both are true
information with each round of replication. The solution for our cells is a
simple repeating unit (TTAGGG) at the end of the DNA, forming a
telomere. Some of the sequence is lost in each round of replication and can
be replaced by the enzyme telomerase. Telomerase is more highly expressed
in rapidly dividing cells. Animal studies indicate that there are a set number
of replications possible, and that the progressive shortening of telomeres
contributes to aging. Telomeres also serve a second function: their high GC-
content creates exceptionally strong strand attractions at the end of
chromosomes to prevent unraveling; think of telomeres as “knotting off” the
end of the chromosome. (Kaplan biochem book)