MultipleAllelesPolygenicTraits

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__**Multiple alleles/Polygenic Traits**__

 * __Multiple Alleles:__** Genes that have more then two alleles
 * __Polygentic Traits:__** Traits controlled by two or more genes.
 * __Allele:__** one number of different forms of a gene

Textbook page 273; **Multiple Alleles** determine a rabbits coat color. Coat color is determined by one gene, but within that gene there are four different alleles. These alleles show patterns of simple dominance in a punnent square will display all the different gene combinations.

Textbook page 273; **Polygenetic Trait. Example:** skin type of humans has four genes involved and that is why there is such a wide varity of human skin types.


 * Sample Problem for a Multiple Allele:** What would be the parents of the following offspring?

1. A blood type-Dominant B blood type -Dominant O blood type- Recessive

25% AB Blood-type 25% Heterozygous B Blood-type 25% Heterozygous A Blood-type 25% Pure O Blood-type
 * Answer:**


 * Link to Eye-Color Calculator:** http://www.athro.com/evo/inherit.html (Polygentic Traits)