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TELOMERES

TELOMERES. Done By: Aimee, Bryan and Cristina. What are Telomeres?. Telomeres are small bits of DNA on the end of chromosomes. Telomeres know how many times a cell should divide. 14/4/08, http://www.geneticsandhealth.com/wp-content/uploads/2007/01/telomeres-2.jpg.

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TELOMERES

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  1. TELOMERES Done By: Aimee, Bryan and Cristina

  2. What are Telomeres? • Telomeres are small bits of DNA on the end of chromosomes. • Telomeres know how many times a cell should divide.

  3. 14/4/08, http://www.geneticsandhealth.com/wp-content/uploads/2007/01/telomeres-2.jpg 14/4/08, http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/T/telomere2.gif

  4. What do Telomeres do? • Telomeres prevent chromosomes from sticking together. • Telomeres help to keep some of the bases that are part of genes that code for vital proteins. • Help to regulate genes and provide an anchoring point on chromosomes. • Each time cells divide the telomere is cut shorter until no more cells can be divided.

  5. 14/4/08, http://www.uhh.hawaii.edu/~ronald/392/Mitosis.JPG

  6. Why are Telomeres important? • Every time the chromosome replicates a piece of the telomere is lost, this is thought to be the result of cell aging. • Telomere shortening can cause some problems. • If there is no telomere on the chromosome then they will stick together and will begin to mix up. • If the chromosomes mix up then uncontrollable cell growth will occur. • All reducing cells use telomeres to start cell division and with out telomeres our cells can’t divide.

  7. How are telomeres related to aging? • Mitosis is the process of cell division. • As the telomeres get shorter they begin to age as it is harder to divide the cells. • As cells age so do we. • When telomeres get to their shortest point they malfunction and die. • If humans keep healthy then the telomeres might last longer.

  8. Works Cited • American federation of aging, 2008, The American Federation for aging research, 11/4/08, www.healthandage.com/html/min/afar/content/topics2_1.html • Unknown organization and date, Telomeres and Cancer, 11/4/08, http://department.monm.edu/chemistry/chemistry330/fall2002/tmurphy/telomere_function.htm • Unknown organization and date, Telomeres and Cancer, 11/4/08, http://department.monm.edu/chemistry/chemistry330/fall2002/tmurphy/cancer.htm • Unknown organization, 2007, Telomeres, 11/4/08, http://www.telomeres.net

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