科学家通过大量研究发现:人体细胞内含有抑制癌症发生的P53基因,

科学家通过大量研究发现:人体细胞内含有抑制癌症发生的P53基因,P+表示正常基因,P-表示异常基因,且限制酶E的识别序列为CCGG。下列分析正确的是:0.65

    A.图示的正常基因变成异常基因会引起染色体结构变异

    B.该基因片断指导合成的蛋白质最多有115个氨基酸

    C. 重组P53腺病毒可用于治疗癌症,可推测腺病毒是一种逆转录病毒

D.若用限制酶E完全切割某人的P53基因图示区域后得到4种不同长度的DNA片段,则此人的基因型为P+P-

答案

D

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