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Genetics Vocabulary
Aaron Stubbs
10
Science
7th Grade
02/10/2010

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Term
alleles
Definition
the diffrent forms of a gene Y and y are diffrent alles of the gene that determines seed color
Term
dominant trait
Definition
a trait expressed preferentially over another trait
Term
f1 generation
Definition
offspring of a cross between true breeding plants,homozygous for the trait of intrest
Term
f2 generation
Definition
offspring of a cross in volving the f1 generation
Term
genotype
Definition
the genetic constitution of an organism with respect to a trait. yellow seeds are dominant but yellow seeded plants could have a genotype of either YY or Yz
Term
heterozygous
Definition
diffrent alleles for a trait in an individual, such as Yy
Term
homozygous
Definition
both alleles for a trait are the same in an individual such as yy
Term
hybrid
Definition
heterozygous; usually reffering to the offsprind of two true breeded (homozygoghts) individuals dirrering in the traits of intrest
Term
monohybrid cross
Definition
cross involviing 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 ressive allele
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