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02 codominance incomplete dominance

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02 codominance incomplete dominance

  1. 1. CODOMINANCE & INCOMPLETE DOMINANCE
  2. 2. CODOMINANCE & INCOMPLETE DOMINANCE Cow colour comes from alleles that are codominant… C R C W C R C W + “ red” “ white” “ roan”
  3. 3. CODOMINANCE & INCOMPLETE DOMINANCE What are the genotypes and phenotypes of the following cows? C W C W C R C R C R C W
  4. 4. CODOMINANCE & INCOMPLETE DOMINANCE What would happen if you mate the following cows? C R C R C R C W x
  5. 5. CODOMINANCE & INCOMPLETE DOMINANCE What would happen if you mate the following cows? C R C R C R C W C R C R C R C W C R C R C R C W F1 Genotypes: 1 C R C R : 1 C R C W F1 Phenotypes: 1 red : 1 roan z
  6. 6. CODOMINANCE & INCOMPLETE DOMINANCE What would happen if you mate the following cows? C R C W C R C W C R C W C R C W F1 Genotypes: All C R C W F1 Phenotypes: All 1 roan C R C W C R C W z
  7. 7. CODOMINANCE & INCOMPLETE DOMINANCE Snapdragon flower colour comes from alleles that are incompletely dominant… F F’ F F’ + “ red” “ white” “ pink”
  8. 8. CODOMINANCE & INCOMPLETE DOMINANCE What are the genotypes and phenotypes of the following snapdragon flowers? FF F’F’ F F’
  9. 9. CODOMINANCE & INCOMPLETE DOMINANCE What would happen if you cross the following flowers? FF F’F’ Mon cherie! My, what soft petals you have!
  10. 10. CODOMINANCE & INCOMPLETE DOMINANCE F F’ F F’ F1 Genotypes: All F F’ F1 Phenotypes: All pink What would happen if you cross the following flowers? F F’ F F’ F F’ F F’ z

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