1. A hydrophobic portion of a substrate molecule would most likely fit into a _____ region of its enzyme's active A) positive charge B) negative charge C) hydrophilic D) hydrophobic E) polar 2. Suppose that gene X,Y and Z are linked and that crossing-over occurs between X and Y 20 percent of the time,between Y and Z 30 percent of time,and between X and Z 10 percent of time.Which gene are farthest apart on the chromosome? A) X and Y B) X and Z C) Y and Z D) X and Y,Y and Z (equally far apart) E) X and Z,Y and Z (equally far apart) ---------------------------- help~~~ thx!! -- 你若不想做，会找到一个藉口；你若想做，会找到一个方法! --

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