One disease affecting these structures is X-chromosome linked to mutations in the DKC1 gene and may require bone marrow transplants. Dyskerin helps to stabilize a catalytic complex that acts on this structure. Deficiencies in maintaining these structures, which are measured by the Q-FISH technique, (10[2])are a major risk factor for idiopathic pulmonary fibrosis. Cajal bodies may serve (-5[1])to recruit RNA structures that act on these structures. The Hayflick limit is (10[1])based on the length of these structures (10[2])that can be extended by TERT. Shortened (10[1])examples of these structures that lose their shelterin cap can trigger senescence, (-5[1])and these structures consist of repeating (10[1])TTAGGG motifs. (10[1]-5[1])For 10 points, what DNA sequences protect the (10[1])ends of chromosomes? ■END■ (10[1]0[3])