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Animations 4.1 (black) 1 AA : 2 Aa : 1 aa complete dom/rec dom dom rec incomplete dominance dom blend dom-rec rec codominant dom1 dom1+ dom2.

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Presentation on theme: "Animations 4.1 (black) 1 AA : 2 Aa : 1 aa complete dom/rec dom dom rec incomplete dominance dom blend dom-rec rec codominant dom1 dom1+ dom2."— Presentation transcript:

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2 Animations 4.1

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7 (black)

8 1 AA : 2 Aa : 1 aa complete dom/rec dom dom rec incomplete dominance dom blend dom-rec rec codominant dom1 dom1+ dom2 dom2 recessive lethal (dom. marker) dead dom rec 1 gene with 2 alleles we’ve seen 4 cases:

9 I A & I B are co-dominant; i is recessive 1 Gene with 3 alleles IC. Genes with multiple alleles

10 Hierarchy of dominance: C > c ch > c h > c IC. Genes with multiple alleles

11 chinchilla c ch

12 IC. Genes with multiple alleles chinchilla c ch

13 IC. Genes with multiple alleles chinchilla c ch himalayan c h

14 Hierarchy of dominance: C > c ch > c h > c IC. Genes with multiple alleles

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16 A short list of the 1587 known mutant alleles of the Drosophila melanogaster eye color gene w (white) IC. Genes with multiple alleles

17 Back to 2 genes TIME ID. Two genes, interacting

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22 A/A ; B/Ba/a ; b/b A/a ; B/b self-cross A/_ ; B/_ A/_ ; b/b a/a ; B/_ a/a ; b/b

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25 wwm+ & m

26 Coat color: Genes A, B, C, D, E, S

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28 AYAY

29 B

30 C cc

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33 D

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35 E

36 II. Mention epistasis versus suppression

37 S

38 III. Genotype -> Phenotype... but with interactions of unknown other genes, environment, +...

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43 Lack of Penetrance Variable Expressivity Lack of Penetrance

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