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Genetics-Chapter 5 - 5B-2
Genetics-Chapter 5 - 5B-2
7
Biology
9th Grade
12/06/2010

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Term
incomplete dominance
Definition
type of inheritance in which the alleles for expressing characteristics are neither dominant nor recessive
Term
codominance
Definition
when both alleles are expressed (but not blended) in a heterozygous offspring
Term
multiple alleles
Definition
the possible arrangement of 3 or more genes (alleles) for a trait at a single locus.
Term
dihybrid cross
Definition
a genetic cross dealing with 2 characteristics at the same time.
Term
independent assortment
Definition
The Mendelian idea that the separation of one set of alleles during gamete formation is not affected by the separation of another set of alleles.
Term
multiple gene interaction
Definition
when 2 or more genes produce a cumulative effect on the same trait.
Term
pleiotropy
Definition
condition in which a gene affects multiple characteristics
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