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The first mammal, Dolly the sheep, was cloned in 1997 by Ian Wilma and his colleagues using the technique of ______ cell nuclear transfer. ()A. maternalB. embryonicC. somaticD. intricate

The first mammal, Dolly the sheep, was cloned in 1997 by Ian Wilma and his colleagues using the technique of ______ cell nuclear transfer. ()

A. maternal

B. embryonic

C. somatic

D. intricate

题目解答

答案

C. somatic

解析

本题考查对克隆技术相关知识以及词汇含义的理解。解题的关键在于了解多利羊克隆所采用的细胞类型，同时要清楚各个选项词汇的意思。

A选项“maternal”：意为“母亲的；母系的”。在克隆技术中，并没有“母系细胞核移植”这种特定的、与多利羊克隆相关的技术表述，所以A选项不符合。
B选项“embryonic”：意思是“胚胎的”。胚胎细胞具有发育成完整个体的潜能，但多利羊的克隆并非使用胚胎细胞进行核移植，所以B选项不正确。
C选项“somatic”：表示“体细胞的”。多利羊是通过体细胞（乳腺细胞）核移植技术克隆出来的，这是克隆技术的一个重要突破，所以C选项正确。
D选项“intricate”：意为“复杂的；错综的”，它与细胞类型和克隆技术的具体操作无关，所以D选项错误。

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