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Cootie Genetics

Cootie Genetics. Cootie Traits. Cootie from the East Cootie from the West Red R Blue r Wide Ear W Bow w Purple eye P Lashes p

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Cootie Genetics

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  1. Cootie Genetics

  2. Cootie Traits Cootie from the East Cootie from the West Red R Blue r Wide Ear W Bow w Purple eye P Lashes p Lips LTongue l Boots B Feet b

  3. What does it all mean • Trend—30:10 ratio of traits from the east versus traits from the west—or 3:1 ratio of dominant to recessive phenotypes • Trend—10:10:10:10 ratio of trait factors RR, Rr, rR, rr—or 1:1:1:1 ratio. • Rr and rR are the same thing– 1:2:1 ratio of Homozygous dominant (RR) to Heterozygous (rR & rR) to Homozygous recessive (rr) genotypes

  4. Punnett Square for the Homozygous Cooties—first generation mating Cootie from the East R R R r R r r Cootie from the west r r R r R

  5. Punnett Square for the Heterozygous Cooties—second generation mating First Generation Offspring R r First Generation Offspring R R R r R r r r R r

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