Bio-Chp 24

Card Set Information

Author:
chrissey
ID:
49108
Filename:
Bio-Chp 24
Updated:
2010-11-12 06:44:23
Tags:
Chromosomal Basis Inheritance
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Description:
Chromosomal basis of Inheritance
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  1. Inheritance of Sex
    • 1.
    • Pairs of Homologs
    • 1-22 = Autosomes
    • 23 = Sex Chromosome

    • 2.
    • XY= Male
    • XX= Female
  2. Sex Linked Genes
    • 1. genes that determine developement on the sex organs on 23rd chromosome
    • 2. genes that have nothing to do with sex found on 23rd chromosome
    • 3. genes are said to be sex linked
    • 4.
  3. X-Linked Genes
    • 1. Duchenne Muscular Dystrophy
    • 2. Hemophilia
    • 3. Color Blindness
    • a. Blue-Green
    • b. Red- Yellow
  4. Genotype and Phenotype for Color Blindness

    B- Normal Vision
    b- Color Blindness
    Genotype Phenotype

    • X(B)X(B)-------Normal Vision- Female
    • X(B)X(b)-------Normal Vision/ Carrier- Female
    • X(b)X(b)-------Color Blindness- Female
    • X(B)Y----------Normal Vision- Male
    • X(b)Y----------Color Blindness- Male
  5. Pedigree Charts
    Used to show a pattern of inheritance for a particular trait through a series of generations

    • 1. Autosomal Recessive Genetic Disorder
    • 2. Autosomal Dominant Genetic Disorder
    • 3. X-Linked Recessive Genetic Disorder
  6. Autosomal Recessive Genetic Disorder
    • 1. Neither parent has the disorder but their child does
    • 2. Parents are carriers

    • Examples:
    • 1. Cystic Fibrosis
    • 2. PKU
    • 3. Tay-Sachs
  7. Autosomal Dominant Genetioc Disorder
    • 1. Affected children usually have at least one affected parent
    • 2. Affected parents can have

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