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The repetitive six-base sequence in human telomeres is:

ATTAGGG
BAAGCTT
CGGATCC
DCCCTAA
Answer & Solution
Correct answer: A. TTAGGG
1. It is repeated 100 to 1000 times. 2. TTAGGG protects chromosome ends. 3. Telomerase adds it. _Source: OpenStax Biology 2e, Chapter 14, DNA Structure and Function (CC BY 4.0)._
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