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  • Transcription & Translation: Where They Occur in the Cell
    Transcription happens in the nucleus, where the DNA is located. The nucleus is the control center of the cell, and it is where the genetic information is stored. Translation happens in the cytoplasm, where the ribosomes are located. Ribosomes are the structures that read the genetic information in the mRNA and produce proteins.

    Here is a more detailed look at the process of transcription and translation:

    Transcription:

    1. The DNA double helix unwinds, and the two strands separate.

    2. RNA polymerase, an enzyme, binds to the DNA at a specific location called the promoter.

    3. RNA polymerase reads the DNA sequence, one nucleotide at a time, and synthesizes a complementary RNA molecule.

    4. The RNA molecule, called messenger RNA (mRNA), is released from the DNA and travels out of the nucleus into the cytoplasm.

    Translation:

    1. The mRNA molecule binds to a ribosome in the cytoplasm.

    2. Transfer RNA (tRNA) molecules, each carrying a specific amino acid, bind to the mRNA molecule according to the genetic code.

    3. The ribosome reads the mRNA sequence, three nucleotides at a time, and links together the amino acids carried by the tRNA molecules.

    4. The chain of amino acids folds into a protein with a specific structure and function.

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