Genetics

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Author:
efrain12
ID:
141090
Filename:
Genetics
Updated:
2012-03-11 23:33:10
Tags:
bio gen
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objectives
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  1. Alleles
    one possible version of a gene
  2. Locus
    a segment a chromosome that codes for a particular trait
  3. Phenotype
    the physical expression of a gene
  4. Genotype
    the genetic make up of a gene
  5. Monohybrid cross
    a cross involving only 1 gene
  6. Dihybrid cross
    a cross involving two genes
  7. P1 Generation
    parental generation
  8. Filial Generations
    offspring
  9. dominant gene
    a gene whose expression masks or inhibits the expression of the other gene
  10. Recessive gene
    a gene whose expression can be masked or inhibited by the presence of a dominant gene
  11. Heterozygous
    genotypically mixed (2 different alleles)
  12. Homozygous
    genotypically the identical (the same alleles)
  13. Incomplete dominance (2)
    condition in which one allele is not fully dominant over another.

    -Heterozygous phenotype is between the two homozygous phenotypes
  14. Polygenic inheritance
    several genes acting together that control most phenotypes

    - results in continious variations of that gene
  15. Multiple alleles
    there are 3 or more forms of a gene for a trait.

    -they can only carry 2 of the 3 though
  16. sex linked traits
    -Men are the only people to inherit Y-linked traits.

    Both men and women inherit X-linked traits

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