DNAlect - DNA Structure and Function What is a Gene Genes...

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DNA Structure and Function
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What is a Gene? Genes are located on chromosomes Drosophilia chromosomes mapped Chromosomes consist of DNA and Protein in equal amounts Both were candidates for the role of genetic material
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Genetic Material Frederick Griffith investigated virulence of Streptococcus pneumoniae Concluded that virulence passed from the dead strain to the living strain Transformation Further research by Avery et al. Discovered that DNA is the transforming substance DNA from dead cell was being incorporated into genome of living cells
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Material of Heredity Viruses consist of a protein coat (capsid) surrounding a Nucleic acid core Bacteriophages are viruses that infect bacteria T1 T7 (E. coli)
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Hershey - Chase Experiments DNA labeled with 32P Capsid labeled With 35S
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DNA contains: Two Nucleotides with purine bases - Adenine (A) - Guanine (G) Two Nucleotides with pyrimidine bases - Thymine (T) - Cytosine (C) Somatic cells for a species contain equal amounts of DNA. Gametes contain half the amount
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DNAlect - DNA Structure and Function What is a Gene Genes...

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