Ms. Vandewiele's Science Class Tough Words for Me

Heidi J. (United States of America)
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Full list of words from this list:

words only definitions & notes
  1. organelle
    a specialized part of a cell; analogous to an organ
    Organelle DNA

    Not all genetic information is found in nuclear DNA.
  2. linked genes
    any pair of genes that tend to be transmitted together
    There are at least a dozen Y-linked genes, in addition to those that code for masculine physical traits.
  3. recessive allele
    an allele that produces its characteristic phenotype only when its paired allele is identical
    On the other hand, a recessive allele will be expressed only if there are two identical copies of that allele, or for a male, if one copy is present on the X chromosome.
  4. macromolecule
    any very large complex molecule
    This is because mitochondria are responsible for converting the energy stored in macromolecules into a form usable by the cell, namely, the adenosine triphosphate (ATP) molecule.
  5. genotypic
    of or relating to or constituting a genotype
    These expressed, or phenotypic, traits are attributable to genotypic variation in a person's DNA sequence.
  6. blood type
    human blood cells that have the same antigens
    Then there are the not so obvious genetic variations, such as blood type.
  7. polymerase
    an enzyme that catalyzes the formation of new DNA and RNA from an existing strand of DNA or RNA
    Transcription

    Transcription, the synthesis of an RNA copy from a sequence of DNA, is carried out by an enzyme called RNA polymerase.
  8. meiosis
    cell division that produces reproductive cells
    Meiosis is the mode of cell replication for the formation of sperm and egg cells in plants, animals, and many other multicellular life forms.
Created on 六月 22, 2011

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