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Genetics II
vocab for studying
14
Biology
10th Grade
12/03/2013

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Term
Trait
Definition
a variation of a particular character
Term
Genetics
Definition
the study of heredity (inheritance)
Term
Hybrid
Definition
the offspring of two different purebred parents
Term
Mono-hybrid cross
Definition
a pairing in which parents differ in only one character
Term
Allele
Definition
alternate forms of genes
Term
Homozygous
Definition
having two of the same allele
Term
Heterozygous
Definition
having two different alleles
Term
Dominant
Definition
the allele that appears to affect the trait (represented by a capital letter)
Term
Recessive
Definition
the allele that does not appear to affect the trait (represented by a lower case letter)
Term
Punnett Square
Definition
a diagram that shows the possible genotypes from a genetic cross
Term
Phenotype
Definition
an observable trait or characteristic
Term
Genotype
Definition
allele described by letters
Term
Testcross
Definition
breeds and individual unknown genotype but dominant phenotype with a homozygous recessive individual
Term
Dihybrid cross
Definition
crossing organisms differing in two characters
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