Genetics the environment and health dna base pairs

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Genetics, the Environment and Health DNA    Base pairs Comparative Sequence Sizes  (Bases) yeast chromosome 3  350 Thousand Escherichia coli (bacterium) genome  4.6 Million Largest yeast chromosome now mapped  5.8 Million Entire yeast genome  15 Million Smallest human chromosome (Y)  50 Million Largest human chromosome (1)  250 Million Entire human genome  3 Billion
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ESCI 274 Genetics, the Environment and Health The particular order of the bases  arranged along the sugar- phosphate  backbone is called the  DNA sequence DNA     Gene the sequence specifies the exact  genetic instructions required to create  a particular organism with its own  unique traits
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ESCI 274 Genetics, the Environment and Health Gene Gene  is a specific sequence of  nucleotide bases, that carries the  information required for constructing  proteins , which provide the structural  components of cells and tissues  as well as enzymes for essential  biochemical reactions
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ESCI 274 Genetics, the Environment and Health DNA     Gene
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ESCI 274 Genetics, the Environment and Health Gene
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ESCI 274 Genetics, the Environment and Health Gene The human  genome  is estimated to  comprise more than 30,000  genes However, as the human genome project  has grown and more information is  available, it has been found that our  genome has approximately 20500  genes.
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ESCI 274 Genetics, the Environment and Health The function of the  genes
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ESCI 274 Genetics, the Environment and Health Proteins All living organisms are composed  largely of  proteins Humans can synthesize at least  100,000 different kinds  Proteins are large, complex molecules  made up of long chains of subunits  called amino acids
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ESCI 274 Genetics, the Environment and Health Proteins
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ESCI 274 Genetics, the Environment and Health How can genetics play a role in a person susceptibility to environmentally related  illnesses/diseases?
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ESCI 274 Genetics, the Environment and Health Environmental exposure Chromosome  +  DNA  +  Gene  +  Protein
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ESCI 274 Genetics, the Environment and Health Environmental exposure Chromosome  + DNA + Gene + Protein Mutations
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ESCI 274 Genetics, the Environment and Health Sequence variation Environmental exposure Chromosome +  DNA  +  Gene  + Protein
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ESCI 274 Genetics, the Environment and Health Abnormal or non-functioning protein Environmental exposure Chromosome + DNA + Gene +  Protein
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ESCI 274 Genetics, the Environment and Health Chromosome     mutations Mutations can be caused by  copying errors  in the genetic material  during cell division  or can be induced by   exposure to  radiation, chemicals, or viruses or can occur  deliberately  under  cellular control during processes such as  meiosis or  hypermutation ( B cells in the immune system )
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