JACOPIN / SCIENCE PHOTO LIBRARY JACOPIN / SCIENCE PHOTO LIBRARY
PROTEIN SYNTHESIS, DRAWING DNA transcription and translation Illustration of DNA transcription to produce proteins. Transcription: The DNA double helix is split by RNA polymerase. The messenger RNA (mRNA), or DNA fragment, is made up of a series of ordered bases called sequences and combines using one of the strands of the unzipped double helix (transcribed strand). Translation: The mRNA leaves the nucleus and enters the ribosomes which decode it by groups of 3 successive mRNA nucleotides (codons), each of which is linked to an amino acid which, recombined, will build a protein (peptide chain).
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