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INCOMPLETE DOMINANCE

INCOMPLETE DOMINANCE. Incomplete Dominance- Pattern of gene expression in which the phenotype of a heterozygous individual is intermediate between those of the parents. Cases in which one allele is not completely dominant over another. Example: Snapdragons and Carnations.

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INCOMPLETE DOMINANCE

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  1. INCOMPLETE DOMINANCE Incomplete Dominance- Pattern of gene expression in which the phenotype of a heterozygous individual is intermediate between those of the parents. Cases in which one allele is not completely dominant over another. Example: Snapdragons and Carnations

  2. Incomplete Dominance- F1 generation

  3. Incomplete Dominance- F2 generation

  4. CODOMINANCE Codominance- The condition in which both alleles in a heterozygous organism are expressed. • BOTH alleles contribute to the phenotype. • The two alleles don’t blend, but are rather both present in the offspring. Examples- Checkered Chickens, Roan Horses, Roan Cows, Variegated Clover.

  5. Codominance Checkered Black White Black chicken B B BW BW W Checkered Checkered White chicken BW BW W Checkered Checkered

  6. Roan Horse http://search.vadlo.com/b/q?rel=2&keys=Dominance+Incomplete+Dominance+Codominance+PPT

  7. Roan Cattle http://www.ccs.k12.in.us/chsteachers/BYost/Biology%20Notes/CH11notescoincompletedom_files/image004.jpg Variegated Clover http://3.bp.blogspot.com/_zUPrgMM5tUg/SSVdrs59_uI/AAAAAAAAAA8/qJGjG2nZPhk/s200/codominance.GIF

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