試題詳解

20
(A)Among the discoveries are elements buried in the genome’s ‘dark matter’ that seem to regulate gene expression.
(B) Each gene contributes only a small amount to the overall disease risk.
(C) Until the past few years, scientists presumed these areas to be wastelands.
(D)Pinpointing how gene variants contribute to disease, however, has been a major challenge.
(E) He was involved in a number of the project’s studies, selection of which were published this week in Science.