Biology 1201A Chapter Notes - Chapter 12: Central Dogma Of Molecular Biology, Peptide, Polynucleotide

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Lecture 12: mrna: it transfers genetic material from the dna in the nucleus to the ribosome for the manufacture of protein. Many proteins consist of more than one subunit. Each subunit is a separate molecule, called a polypeptide, coded by a separate gene. Polypeptides assemble to form a functional cluster of molecules called a protein. Ex the protein hemoglobin is made up of. 4 polypeptides; 2 each of an alpha subunit and 2 for beta subunit. So 2 diff genes are needed to encode the hemoglobin protein; one for the alpha polypeptide and 1 for. The pathway from gene to polypeptide has 2 steps: transcription and translation. Transcription: info encoded in dna is made into a complementary strand rna copy. The info in one nucleic acid type is transferred to another nucleic acid type. The ez rna polymerase creates an rna sequence complementary to the dna sequence of a given gene.

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