12.2

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Anonymous
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206690
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12.2
Updated:
2013-03-12 09:39:35
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12 lesson
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FLahscards for science lesson 12.2
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  1. What did Mendel observe?
    He observed heredity. (the passing of the physical characteristics, or traits, from parents to offspring)
  2. Today, Mendel's discoveries form the foundation of ________, the scientifc study of heredity.
    genetics
  3. A new organism begins to form when egg and sperm cells join in the process called __________.
    fertilization
  4. What is a purebred?
    when a purebred organism is the offspring of many generations that show the same form of a trait.
  5. What is an example of a purebred organism?
    Two purebred tall pea plants always producing tall offspring.
  6. Today, scientists know that _____ control the inheritance of traits.
    genes
  7. What do scientists call the purebred tall plants crossed with the purebred short plants?
    parental, or P generation
  8. ______ are the different forms of a gene.
    Alleles
  9. What is an organsism's traits controlled by?
    Alleles it inherits from it's parents
  10. Some alleles are _____, while other alleles are ______.
    dominant, recessive
  11. One Direction
    An awesome british/irish boy band

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