INCOMPLETE DOMINANCE Incomplete Dominance- Pattern of gene expression in which the phenotype of a heterozygous individual is intermediate between those.

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Presentation transcript:

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

Incomplete Dominance- F 1 generation

Incomplete Dominance- F 2 generation

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.

BB W W BW Codominance White chicken Black chicken Checkered BlackWhite

Roan Horse

Roan Cattle Variegated Clover