L12 DNA Structures and Function

L12 DNA Structures and Function - BIOLOGY 1A03 Cellular and...

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BIOLOGY’1A03’ Cellular’and’Molecular’Biology’ Lecture’12:’DNA’structure’and’func±on’ Readings: Biological Science 2 nd Custom Edi6on for McMaster Pages:’62-69’(sec±ons’4.1’to’4.2)’
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BIOLOGY 1A03 Cellular and Molecular Biology Learning objec6ves IdenAfy’DNa’±s’the’heredit±ry’molecule’in’the’cell’ Describe’the’structure’of’DNa’±nd’b±se-p±iring’rules’ IdenAfy’the’loc±Aon’of’genomes’in’the’cell’ Expl±in’how’org±nelle’genomes’provide’support’for’ endosymbioAc’theory’of’org±nelle’origins’
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Unit’1:’Nucleic’acids’
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BIOLOGY 1A03 Cellular and Molecular Biology Where is DNA found in the cell? nucleoid :’contains’ the’DNA’of’the’ prokaryo±c’genome’ plasmids :’small’ double-stranded’DNA’ molecules’that’are’ dis±nct’from’the’ bacterial’genome’ Carry 1 or 2 genes i.e. an/bio/c resistance Fig 7.1
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BIOLOGY 1A03 Cellular and Molecular Biology What does the prokaryo6c chromosome look like? Chromosome: the organized double-stranded DNA molecules with its associated proteins and RNAs
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BIOLOGY 1A03 Cellular and Molecular Biology Scien6sts create “maps” of bacterial chromosomes. Genomic maps illustrate the position of genes on the prokaryotic chromosome. Also shown above: maps of circular plasmids
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BIOLOGY Cellular and Molecular Genes can be divided into func6onal categories This allows observation of genome content as fractions of the whole genome
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L12 DNA Structures and Function - BIOLOGY 1A03 Cellular and...

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