DNA in cell

DNA in cell

1. Virus

   • Types of Genetic Material
     • Rna
       • Single stranded Double stranded
       • Retroviruses are a kind of RNA viruses
         • The ones than can make reverse transcription
         • Can act like DNA
     • DNA
       • -Single stranded -double stranded -single stranded circular -Double stranded circular -double stranded with each end covalently sealed -Double stranded with protein in each end
       • Replication in DNA Viruses
         • Rolling Circle
         • Replication in X174
   • Example
     • Bacteriophages
   • Exporting GENETIC (viral particles)

2. Bacteria

   • Have different Genome sizes
     • Pan Genome: non essential genes
     • Core Genome: essential genes that define species
     • Not all genes are present in all bacteria
   • Most of the times it consist in just one circular chromosome

3. Chloroplast and Mithocondrpa

   • Have Circular DNA
   • Plants Have the biggest size of mithocondrial Genome
   • Genetic code in Mit is more flexible
   • In High Eukaryote, female gives Mithocondria genes

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