Indicate whether each of the following descriptions better applies to a centromere (C), a telomere (T), or an origin of replication (O). Your answer would be a six-letter string composed of letters C, T, and O only, e. g. TTCCTO.

( ) Each eukaryotic chromosome has many such sequences.
( ) There are normally two such sequences in each eukaryotic chromosomal DNA molecule.
( )There is normally one such sequence per eukaryotic chromosomal DNA molecule.
() It is where DNA duplication starts in S phase.
( ) It attaches the chromosome to the mitotic spindle via the kinetochore structure.
() It contains repeated sequences at the ends of the chromosomes.