Unit 8: Mendelian Genetics 8.4 Incomplete Dominance

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Presentation transcript:

Unit 8: Mendelian Genetics 8.4 Incomplete Dominance

When an allele is either dominant or recessive. Complete Dominance

Incomplete Dominance When an offspring’s phenotype is a blend of the two parents. It is like mixing paints, one color does not dominate the other Examples: If you take a red flower and a white flower and you breed them, you get a blending of the two colors and get a pink flower. Hair color

Using a Punnett Square for Incomplete Dominance Use only capital letters because there are no real dominant/recessive traits Place the two traits onto the Punnett square, the same as you have before. Cross the traits in the square

A cross between a white mouse and a black mouse create grey offspring. a. parent genotype b. offspring genotype c. offspring phenotype Example

http://www.k- state.edu/biology/pob/genetics/incom.htm More Practice