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Third Lecture - LSU School of Medicine
Third Lecture - LSU School of Medicine

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Questions to Ask Your Doctor: Genes and Inherited Breast Cancer
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... Inherited Genes and Breast Cancer Risk Every cell in your body contains genes. Sometimes, people are born with an error in one of these genes called a mutation. Some gene mutations are linked to breast cancer (i.e., BRCA1 and BRCA2). A mutated gene can be inherited from either the mother or father. ...
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... Keep your answers covered If you need to make up a quiz due to an absence… come see me Tues or Thurs during PLC Flip it over when you are finished and hang on to it ...
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Genetic code



The genetic code is the set of rules by which information encoded within genetic material (DNA or mRNA sequences) is translated into proteins by living cells. Biological decoding is accomplished by the ribosome, which links amino acids in an order specified by mRNA, using transfer RNA (tRNA) molecules to carry amino acids and to read the mRNA three nucleotides at a time. The genetic code is highly similar among all organisms and can be expressed in a simple table with 64 entries.The code defines how sequences of these nucleotide triplets, called codons, specify which amino acid will be added next during protein synthesis. With some exceptions, a three-nucleotide codon in a nucleic acid sequence specifies a single amino acid. Because the vast majority of genes are encoded with exactly the same code (see the RNA codon table), this particular code is often referred to as the canonical or standard genetic code, or simply the genetic code, though in fact some variant codes have evolved. For example, protein synthesis in human mitochondria relies on a genetic code that differs from the standard genetic code.While the genetic code determines the protein sequence for a given coding region, other genomic regions can influence when and where these proteins are produced.
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