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genetics vocab
h lambert
13
Science
7th Grade
02/10/2010

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Term
alleles
Definition
the different from of a gene.
Term
dominant trait
Definition
a trait expressed preferentiallyover another trait.
Term
F1 generation
Definition
offspring of a cross between true breeding plants,homozygous for the trait of interest
Term
F2 generation
Definition
offspring of a cross involving the F1 generation
Term
genotype
Definition
the genetic constitution of an organism with respect to a trait
Term
heterozygous
Definition
differing alleles for a trait in an individual
Term
homozygous
Definition
both alleles for a trait are the same in an individual
Term
hybrid
Definition
heterozygous;usually refering to the offspringof two true breeding individuals differing in the traits of interest
Term
monohybrid cross
Definition
cross involving parents differing in only one trait
Term
mutation
Definition
change in the dna sequence of a gene to some new,heritable form. generally,but now always a recessive allele.
Term
phenotype
Definition
the physical appearence of an organism with respect to a trait
Term
recessive trait
Definition
the opposite of dominate.a trait that is preferentially masked.
Term
sex-linked
Definition
a gene coded on a sex chromosome,such as the x-chromosome linked genes of flies and man.
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