哲宇 發問時間: 科學其他:科學 · 1 0 年前

genetic code

How is the genetic code transferred from nucleus into the cytoplasm?

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  • Jude
    Lv 7
    1 0 年前
    最佳解答

    圖片參考:http://citnews.unl.edu/croptechnology/lessonImages...

    A molecule called RNA polymerase reads the gene to be produced and makes a copy of the DNA sequence called RNA. The RNA strand is able to travel outside of the nucleus into the cytoplasm.

    RNA 聚合脢(RNA polymerase)在基因序列上移動同時進行轉錄作用以製造RNA,RNA股能夠穿過細胞核膜,因而複製的基因密碼進入細胞質

    In order to get the genetic code from the nucleus to the cytoplasm, the cell reads the DNA and makes a message molecule called RNA. Making RNA begins when the two DNA strands for a gene unwind and separate. A protein present in the nucleus, called RNA polymerase, binds to one DNA strand and builds a complementary mRNA strand. When it does this, it places a Uracil (U) nucleotide instead of a Thymine nucleotide in the mRNA strand. This process is called ' transcription'. When transcription begins, the DNA code is in the nucleus while the amino acids, which will compose the protein to be produced, are in the cytoplasm. A molecule called RNA polymerase reads the gene to be produced and makes a copy of the DNA sequence called RNA. The RNA strand is able to travel outside of the nucleus into the cytoplasm with the amino acids

    An excellent website for what DNA is and how it relates to genes and chromosomes.Good luck

    http://citnews.unl.edu/hscroptechnology/html/print...

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