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1020 unit 9
Unit 9
17
Biology
Undergraduate 1
04/07/2009

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Term
allele
Definition
alternate form of a gene
Term
dihybrid cross
Definition
a genetics cross in which the inheritance of two traits is studied
Term
dominant
Definition
the allele that is expressed in the hereozygote
Term
F1
Definition
the offspring of the parental generation
Term
F2
Definition
the offspring of a cross of two F1 individuals
Term
genetics
Definition
the study of inheritance patterns and process
Term
genotype
Definition
the alleles that an individual has for a particular gene
Term
heterozygous
Definition
a genotype consisting of two different alleles; not true breeding
Term
homozygous
Definition
a genotype consisting of two identical alleles; true-breeding
Term
monohybrid cross
Definition
a genetics cross in which the inheritance of one trait is studied
Term
P
Definition
parental or original generation in a series of a genotype
Term
pedigree
Definition
a family tree in which the phenotypes of family members are presented by standard symbols
Term
punnett squares
Definition
a graphic device in which all possible outcomes of a cross between two individuals are depicted
Term
recessive
Definition
an allele that is masked in the heterozygote
Term
test cross
Definition
a cross between and individual of unknown genotype and and idividual with the homozygous recessive genotype
Term
tru-breeding
Definition
homozygous
Term
wild type
Definition
the monst common phenotype in a natural populations; generally taken as the standard or "normal" phenotype
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