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Heredity/Genetics Quiz 1
History/Principles of Genetics
8
Science
7th Grade
10/11/2010

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Term
trait
Definition
a characteristic that is inherited by an organism from a parent; could include physical characteristics, diseases, behaviors, talents, and abilities
Term
genes
Definition
the units of heredity
Term
purebred
Definition
an organism that inherits either two dominant or two recessive genes (TT or tt)
Term
hybrid
Definition
organism that inherits one dominant gene and one recessive gene (Tt)
Term
heredity
Definition
the passing on of traits from parents to offspring
Term
dominant
Definition
the stronger trait; represented by an upper-case letter
Term
recessive
Definition
the weaker trait; represented by a lower-case letter
Term
incomplete dominance
Definition
there is neither a dominant nor a recessive gene in the gene pair and the traits blend together (Ex: curly hair x straight hair = wavy hair)
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