問題詳情

14. Individuals with the disorder xeroderma pigmentosum are hypersensitive to sunlight. This occurs because their cellsare impaired in what way?
(A)They cannot replicate DNA.
(B)They cannot repair thymine dimers.
(C) They cannot undergo mitosis.
(D)They cannot exchange DNA with other cells.
(E)They do not recombine homologous chromosomes during meiosis.

參考答案

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