Cancer Biology - University of Massachusetts Boston

Telomeres become smaller and smaller with each cell : division in normal somatic: Cells because telomerase . is not active. Telomeres and Immortality ...

  Telomeres

DNA replication - California State University, Northridge

¥Telomeres form a sort of single stranded cap around the chromosome ends to protect them from being degraded Ðchromosome ends are progressively shortened with each round of replication. ÐÒoldÓ cells with shortened telomeres undergo apoptosis - ¥Protective for normal cells ¥Kill the old and possibly mutated

  States, University, California, California state university, Northridge, Telomeres

The Link Between Chromosomes, DNA, and Genes

• The telomeres– the ends of the chromosomes • The banding– the pattern of light and dark stripes that run along the length of the chromosomes. It is used to distinguish chromosomes of the same size. Plus, changes in this pattern may be a clue that there is missing or extra genetic material in the chromosome. Plant & Animal DNA

  Telomeres

REPLICATION DE L’ADN

II.A.b. Elongation : La synthése de l'ADN est BIDIRECTIONNELLE à partir de l'Ori C ;elle a lieu le long de la molécule d’ADN dans les deux sens opposés(deux fourches de replication).

Les cellules et les tissus - IFSI DIJON

Les cellules et les tissus UE 2.1 Biologie fondamentale Pr Marianne Zeller INSERM U866, UFR Sciences de santé, Université Bourgogne-Franche Comté

  Cellule, Tissus, Les cellules et les tissus