Incomplete+Dominance

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Incomplete dominance is a form intermediate inheritance from one allele of a specific trait is not
completely dominant over the other allele making a phenotype. It occurs in the heterozygous or hybrids genotype where 2 alleles blend to give a different phenotype. It is one of two complex inheritance patterns.

In humans the most well known incomplete dominance occurs in your genes. For curly hair. inhereiting a gene for curly hair from one parent and a gene for straight hair from the other parent will give a hair texture that is blend of the two parents being wavy hair. Another example of incomplete dominance in humans is the sickle cell disease.Experiments narrowed down where the sickle cell occurs to the hemoglobin molecule.

A gene can also show incomplete dominance. When breeding black animal (AA) is crossed with a breeding white (aa) and the first-generation offspring are grey-blue (Aa). Then when the offspring are mated to each other the second generation’s offspring consist of 1 black, 1 white and 2 grey-blue. Since the black and white reappear undiluted in the second generation the genes have not merged but have remained independent, despite the fact that in a heterozygote (Aa) they affect each other.

[] - Incomplete Dominance neither trait is dominant. On this site it shows how incomplete dominance shows up in different types of animals. (Alex)

Picture one is Co-Dominance and picture two is Incomplete dominance Due to a great deal of resemblance between Co- Dominance and Incomplete Dominance. Incomplete dominance is often confused with co-dominance. Since incomplete dominance is quite different from co-dominance, if the two alleles are involved in an incomplete dominance relationship, the phenotype of the heterozygote will be the intermediate of the phenotypes of the two homozygotes. Even if the alleles themselves don't blend, the entire process is referred to as blending as it appears as if both the traits have blended together.
 * Differents between Co-Dominatce and Incomplete Dominance**

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The thing I found most interesting about incomplete domincance, is an animal being roan. This was interesting thing to learn about because I have a red roan horse. The site I found tells about the "Rn gene" in roans that gives them their color. There was once a paper published, explaining that roans were lethal, because when you breed two roan parents the offspring had a 50% of being a non roan. By: Lexy

[] This website is a type of game. It helps you figure out if the two items are cross what the offspring will be. When you get closer to the end of the game where you choose what two items you want to cross, they will give you two more things to cross and you have to choose what the offspring will be. I thought that this was a really cool site because it would tell you if you got it right or not, and if you didn't it would explain on why you didnt get it right. By: Kayla

[] This website helps breakdown the diffrences between complete dominance and incomplete dominance. It gives examples, and shows pictures. I thought it was cool how straight+curly hair=wavy hair. It's interesting because many people just think that there is just straight or curly, and when wavy comes up you cna prove the people wrong because they were just mixed together.-Tasha

media type="custom" key="8189160" Works Cited

media type="custom" key="8189992" [] [] [] [] ( Annika ) -- describes the differences about incomplete dominance and codominance []eric [] Devin