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Complicated GENETIC Punnett Squares

Learn about the complex genetic patterns of codominance and incomplete dominance. Explore how both alleles are expressed and influence the phenotype in heterozygous individuals. Discover examples such as cows and roses that demonstrate these genetic patterns.

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Complicated GENETIC Punnett Squares

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  1. Complicated GENETIC Punnett Squares

  2. CODOMINANCE: both alleles are dominant and expressed – in a heterozygous individual the result is that both traits are seen, the phenotype of BOTH alleles is expressed Ex. Cows: Red coat on male (RR) White coat on female (WW) Offspring: RW = a Roan cow, red AND white patches

  3. INCOMPLETE DOMINANCE: both alleles influence the phenotype but neither is dominant – in a heterozygous individual the result is a mix/blend of the traits Ex. Roses: Red petals on flower (RR) White petals on other flower (R’R’) Offspring: RR’ = pink petals RR’ R’R’

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