英語和生物都好的天才來幫我

如果DNA中的突變導(dǎo)致含有“信息”的mRNA發(fā)生改變，這將對(duì)其編碼產(chǎn)生的蛋白質(zhì)產(chǎn)生什么影響？

my god!!!!

蛋白質(zhì)可能改變也可能不變，雖然mRNA中的堿基發(fā)生了改變，但是，決定同一種氨基酸的密碼子不止一種，突變后的密碼子和突變前的密碼子，可能決定同一種氨基酸。另外，mRNA中還存在隱含子和外顯子的分別，隱不表達(dá)；另外還有編碼區(qū)和非編碼區(qū)之分，非不產(chǎn)生蛋白質(zhì)僅起輔助作用！ 這樣，蛋白質(zhì)就沒變。

翻譯一下就行了，不行就用Google翻譯

如果mRNA所攜帶的“信息”是從DNA上轉(zhuǎn)錄而來的，那么它將對(duì)蛋白質(zhì)的合成起什么作用呢？

it depends on what kind of mutation it is. For example, mutation can be point mutation, insertion, or deletion.

Generally speaking, for point mutation, silence mutation causes no change in protein product because the altered DNA encodes same amino acid, mis-sense mutation codes different amino acid in the protein product, and non-sense mutation introduces pre-mature stop coden and therefore usually leads to truncation of final protein product.

Insertion and deletion can cause frame-shifting, which may significantly alter the final protein product.

大致就這樣吧，懶得寫了，對(duì)你的題目來說，大部分情況應(yīng)該都包括進(jìn)去了

再加一句，if mutation occurs in 3'UTR or 5'UTR，there is no change in the final protein product. In stead, mutation in those regions might affect the stability of mRNA as well as the efficiency of translation.

還有，四樓所說的隱含子和外顯子是什么？intron and exon嗎？都mRNA了，哪里來的intron，但凡能在mRNA里面出現(xiàn)的序列，就不能叫intron