Lecture_6 - Gene Expression Learning Objectives How DNA is...

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Gene Expression • DNA replication • How DNA is packed in the chromosome? • Transcription of genetic information from DNA to the messenger RNA • Transfer RNAs • Ribosomes Learning Objectives • Translation
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An Electron Micrograph of a T2 Bacteriophage and its DNA The phage has been osmotically lysed in distilled water so that its DNA has spilled out. The DNA is rendered visible in the electron microscope by first coating it with denaturated cytochrome c to fatten it to ~ 200 Å and then shadowing the resulting preparation with platinum Fig. 23-0
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Genome is one haploid (single) set of chromosomes with the genes they contain. It includes all the genetic material of an organism. • Human genome consists of 3·10 9 base pairs in 23 chromosomes. The total contour length of DNA in a single cell is 1 m. • Human chromosomes are 1.3 - 10 µ m long in most condensed state. Each chromosome contains proteins and a single DNA molecule. Fig. 23-43
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Lecture_6 - Gene Expression Learning Objectives How DNA is...

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