Introduction to Gene Expression

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Introduction to Gene Expression pp. 204-206

(contains thousands of genes) RNA vs. DNA RNA and DNA both store genetic information, but are still different RNA DNA Ribose Deoxyribose Uracil Thymine Single Stranded Double Stranded Short (contains one gene) Long (contains thousands of genes)

Types of RNA mRNA (Messenger RNA): carries instructions to make a protein rRNA (Ribosomal RNA): part of ribosome tRNA (Transfer RNA): transfers amino acids to ribosomes

Gene Expression A gene is a segment of DNA that holds the instructions for a trait A trait is made up of proteins Expressing a gene means that the cell is making a protein

Overview DNA  RNA  Protein The process of copying DNA to make RNA and then the RNA is decoded to make a protein