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Ch. 12 Human Traits
Ables/Brown flashcard review
6
Biology
9th Grade
02/07/2008

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Term
Heredity
Definition
traits passed on to the offspring by parents either dominant or recessive
Term
Genetic disorders
Definition
usually caused by recessive traits
Term
Sex linked traits
Definition
Traits found on the X or Y chromosome. If on the Y of a father, the daughters do not have a chance of getting it. If on the X of the mother, sons and daughters have an equal chance.
Term
Polygenetic inheritance
Definition
Traits affected by many genes like hair and skin color and eye color
Term
Inbreeding
Definition
the breeding of closely related individual - dangerous because recessive genes and genetic disorders emerge
Term
Gene pool
Definition
All the genes available in a species. If it's to "shallow" or small, extinction can occur.
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