Leptin is effective in reducing weight but it’s many years away before humans ca

游客2023-07-12  25

问题 Leptin is effective in reducing weight but it’s many years away before humans can use it. [br] Both obese mice and normal mice have the ob gene.

选项 A、Y
B、N
C、NG

答案 A

解析 由文中第三段第四句“...Friedman...pinpointed the ob gene in both average-weight and obese mice”可知这两种老鼠体内都有ob基因。
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