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<div>TELOMERE: repetitive DNA sequences that are situated at the tips of chromosomes. They are vital to the survival and life of the chromosome. Telomeres protect the ends of the chromosomes from damage and stop them from becoming attached to each other. They shrink after every cell division and there has been a great deal of research interest into the relationship between telomere length and cellular senescence and theories about the possibilities of increasing life spans if telomere length can be maintained.</div>
<div>CENTROMERE: the central region of the chromosomal structure. It's where the two sister chromatids are joined to each other.</div>
<div>SHORT ARM: it is termed the 'p' arm.</div>
<div>LONG ARM: is termed the 'q' arm.</div>
<div>DNA: or deoxyribonucleic acid, is a molecule that contains genetic information.</div>
<div>CHROMATIDS: these are two identical copies of the chromosome. During cell division all the DNA of each chromosome is replicated. They eventually separate to become a full chromosome.</div>