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Complex Genetic Principles & Human Genetics

Complex Genetic Principles & Human Genetics. When Heredity Follows Different Rules. Incomplete Dominance Co-dominance Multiple Alleles Sex Linkage Polygenic Inheritance. Incomplete Dominance & Codominance. There is no dominant allele, There is no recessive allele.

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Complex Genetic Principles & Human Genetics

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  1. Complex Genetic Principles & Human Genetics

  2. When Heredity Follows Different Rules Incomplete Dominance Co-dominance Multiple Alleles Sex Linkage Polygenic Inheritance

  3. Incomplete Dominance & Codominance There is no dominant allele, There is no recessive allele. Both alleles “blend” to result in a third phenotype.

  4. Incomplete Dominance & Codominance

  5. Codominance in Humans Sickle Celled Anemia

  6. Codominance in Humans Sickle Celled Anemia

  7. Multiple Alleles - Human Blood Type Traits that are Controlled by Three or More Alleles An Individual Has a Combination of Two of These

  8. Multiple Alleles - Human Blood Type Allele A and Allele B are Codominant over Allele O (recessive) Blood Type Determined by the Proteins on the Surface of Red Blood Cells

  9. Multiple Alleles - Human Blood Type What are the Genotypes of Each Individual? Key Red: Type A Blue: Type B Red/Blue: Type AB White: Type O

  10. Sex Linked Traits Traits that are Controlled by Genes Found on the X Chromosome but not the Y Chormosome

  11. Sex Linked Traits • Sex Linked Recessive Traits In Human Beings • Red Green Colorblindness • Hemophilia

  12. Sex Linked Traits

  13. Sex Linked Traits

  14. Polygenic Inheritance Genetics of Skin Color Multiple Gene (Polygenic) Inheritance

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