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M-Nin Ch.14 Mendel Genetics
Terms on genetics and inheritance
10
Biology
Undergraduate 1
01/31/2009

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Term
Character
Definition
A heritable feature that varies among individuals.
Term
Trait
Definition
Variant for a character, such as purple flower or white color flowers.
Term
True-Breeding
Definition
Plants that produce the offspring of the same variety when they self-pollinate.
Term
Hybridization
Definition
Process of crossing or mating two true-breeding varieties.
Term
Incomplete Dominance
Definition
Neither allele is completely dominant. Ex: Snap Dragons
Term
Codominance
Definition
Two alleles both affect the phenotype in separate, distinguishable ways. Ex: Blood Cells
Term
Polygenic Inheritance
Definition
An additive effect of two or more genes on a single phenotypic character. (opposite of
pleiotropy) Ex. skin pigment
Term
Law of Segregation
Definition
The two alleles for a heritable character segregate(separate) during gamete formation and end up in different gametes.
Term
Law of Independent Assortment
Definition
each pair of alleles segregates independently of each other pair of alleles during gamete formation.
Term
Carriers
Definition
Heterozygotes that may transmit the recessive allele to their offspring .
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