Which of the following occurs when a cell repairs a double-strand DNA break by the process of nonhomologous end joining? The DNA sequence at the site of repair is altered by a short addition The original DNA sequence at the site of repair is reconstituted with 100% accuracy. The DNA sequence at the site of repair is altered by a short deletion. The DNA sequence at the site of repair matches that of a homologous chromosome. The DNA sequence at the site of repair contains a short segment of telomere DNA

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TayTae1876 TayTae1876

29-11-2022
Biology

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Which of the following occurs when a cell repairs a double-strand DNA break by the process of nonhomologous end joining? The DNA sequence at the site of repair is altered by a short addition The original DNA sequence at the site of repair is reconstituted with 100% accuracy. The DNA sequence at the site of repair is altered by a short deletion. The DNA sequence at the site of repair matches that of a homologous chromosome. The DNA sequence at the site of repair contains a short segment of telomere DNA

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AnkitM AnkitM · Answer 1 · 2022-12-01T17:35:40+01:00

When a cell repairs a double-strand DNA break by the process of nonhomologous end joining The DNA sequence at the site of repair is altered by a short addition.

Non-homologous end joining is a step that repairs double-strand breaks in DNA. NHEJ is referred to as non-homologous because the break ends are precisely ligated without the need for a homologous template, with contrast to homology directed repair(HDR), That also needs a homologous sequence to guide repair.

Double-strand breaks in DNA appears as a result of exposure to foreign agents such as radiation or chemicals, as well as through some processes, like DNA replication and repair.

To learn more about DNA replication , here

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