THE MOLECULAR BASIS OF INHERITANCE
DNA REPLICATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which types of cells have a high expression of telomerase? Select all that apply.
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somatic cells
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stem cells
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gametic cells
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cancer cells
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Explanation:
Detailed explanation-1: -Telomerase is found in high levels in germline? cells (egg and sperm) and stem cells. In these cells telomere length is maintained after DNA replication and the cells do not show signs of ageing. Telomerase is also found in high levels in cancer? cells.
Detailed explanation-2: -Cancer cells are characterized by high telomerase activity, which enables cells to divide indefinitely. Telomerase is active in 85–95% of cancers (3, 4).
Detailed explanation-3: -Telomerase activity has been found in almost all types of human cancer, although not all. Most cancers that do not have active telomerase have found other ways to maintain the length of their telomeres.
There is 1 question to complete.