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  1. blood type
    human blood cells that have the same antigens
    Then there are the not so obvious genetic variations, such as blood type.
  2. gene
    part of DNA controlling physical characteristics and growth
    The biological information contained in a genome is encoded in its deoxyribonucleic acid (DNA) and is divided into discrete units called genes.
  3. DNA
    material that carries genetic information in a cell
    The biological information contained in a genome is encoded in its deoxyribonucleic acid (DNA) and is divided into discrete units called genes.
  4. chromosome
    a threadlike strand of DNA that carries genes
    In 1909, Danish botanist Wilhelm Johanssen coined the word gene for the hereditary unit found on a chromosome.
  5. mutation
    a change or alteration in form or qualities
    There are many diseases caused by mutations in mitochondrial DNA (mtDNA).
  6. recessive
    of or pertaining to a recession
    These factors each exhibit a characteristic dominant, co-dominant, or recessive expression, and those that are dominant will mask the expression of those that are recessive.
  7. protein
    an organic compound essential to living cells
    Genes code for proteins that attach to the genome at the appropriate positions and switch on a series of reactions called gene expression.
  8. amino acid
    organic compounds containing an amino group and acid group
    Proteins are long chains containing as many as 20 different kinds of amino acids.
Created on 一月 17, 2011

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