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**What is Polydactyly?** It is a condition which parents may be blamed in which babies receive once their born receiving more than 5 fingers per hand and more than 5 toes per feet and sometimes it can be just fleshy stumps. Polydactyly is a common disease that one in every 500 births may be affected by this condition (Your dictionary). The gene that causes polydactyly is a dominant expressive gene meaning that it needs to come from both parents. Polydactyly is the most common variations that happens in a basic growth of hands and feet. Polydactyly can have multiple variations such as: Having the condition of Polydactyl can occur on its own without the help of any certain causes after birth. Such as many other conditions polydactyly can be passed down or inherited from families. These traits are affected by only one gene that can cause several variations to the person. African Americans, more than other ethnic groups, can inherit a 6th finger (Medline plus). In most cases of polydactyly is not always caused by a genetic disease. Some of the extra fingers or toes are not fully or poorly developed and is attached by a small stalk (generally on the little finger side of the hand), but these poorly formed cases can be removed (Medline plus). When they remove these poorly developed extra digits they simply tie a string tight on the stalk can be able to cause it to fall off on time if there are no bones on the digit. There are some polydactyly cases where the extra digit is well formed and they can even function. Larger or the extra digits may need to conduct a surgery for its removal. Before the surgery doctors may ask if polydactyly happen at birth, because a person may not know if they have it. The condition of polydactyly can cause some social problems with the person who has it, so doctors would recommend parents to remove the extra digit early on in life to avoid future social problems.
 * //__ Polydactyly __//**
 * A small extra bump on the side of a hand
 * A finger which widens to end in two fingertips
 * An extra finger which dangles by a thin cord from the hand
 * A hand which looks normal except that it has a thumb and five fingers
 * Infinite number of other variations
 * Considerations: **
 * Benefits: **
 * Polydactyl cats have an advanced ability to maintain their balance and to catch mice than any other normal cats.
 * According to Sarah Hartwell of MessyBeast.com, some people claim that the extra toes of a polydactyl cat allow greater dexterity (ehow).

Polydactyly are found in more in African Americans than any other races. According to test this is not caused or linked to a genetic disease. Also polydactyly can be found in the Asian population and the extra digit tends to be present as a larger digit on the hand or foot (Your dictionary). Within Asians this condition also accompanies other congenital abnormalities, such as fusion of skin between neighboring finger or toes or Down’s syndrome. Many diagnosis of this condition is usually done by compiling tests results or by looking through family medical records. Also chromosomes studies can be conducted for the determination of polydactyly. Pregnant women soon to become a mother, diagnosis can be made by looking through sonograms which are cases where it can be difficult to find polydactyly, but by using a technique known as embryofetoscopy that can be performed during the first trimester helping doctors to determine whether the baby will have a case of polydactyly (Your dictionary). "Polydactyly: MedlinePlus Medical Encyclopedia." //U.S National Library of Medicine//. U.S. National Library of Medicine. Web. 07 Mar. 2012. . "Trisomy 13." //- Genetics Home Reference//. Web. 07 Mar. 2012. . "Smith-Lemli-Opitz Syndrome." //- Genetics Home Reference//. Web. 07 Mar. 2012. . "CCAkids.org - Syndromes." //CCAkids.com//. Web. 07 Mar. 2012. . "Ellis-van Creveld Syndrome: MedlinePlus Medical Encyclopedia." //U.S National Library of Medicine//. U.S. National Library of Medicine. Web. 07 Mar. 2012. . "Asphyxiating Thoracic Dystrophy." //- Genetics Home Reference//. Web. 07 Mar. 2012. . "Polydactyly (Extra Fingers)." //E-Hand The Electronic Textbook of Hand Surgery//. Web. 07 Mar. 2012. . //BBC News//. BBC. Web. 07 Mar. 2012. . "Laurence-Moon-Biedl Syndrome." //Wikipedia//. Wikimedia Foundation, 26 Feb. 2012. Web. 07 Mar. 2012. . "What Causes Polydactyly?" //Answers to Questions//. Web. 11 Mar. 2012. . Kahl, Lindsay. "The Advantages of Polydactyl Cats." //EHow//. Demand Media, 09 Feb. 2010. Web. 12 Mar. 2012. . [] (Cannot cite)
 * Limitations: **
 * Can affect the social life of a person who has polydactyly, because socially the society will find that having an extra digit is gross or weird causing name-calling and people avoiding the person that has the condition.
 * The condition of polydactyly is a common condition, because it can be easily be inherited to the baby from the parents and studies show that one in 500 births can produce a child with polydactyly (Your dictionary).
 * Causes: **
 * ** Asphyxiating thoracic dystrophy: ** It is an inherited genetic disease that affects bone growth that can be characterized a small chest, short ribs, and shortened bones in the arms and the legs (Medline plus).
 * ** Carpenter syndrome: ** it is a rare genetic disease that can be characterized by a webbing and fusion between certain fingers and toes sometimes on the extra digit finger or toe (CCA kids).
 * ** Ellis-Van Creveld syndrome (chondroectodermal dysplasia): ** a rare genetic disorder that affects bone growth (Medline plus).
 * ** Familial polydactyly: ** Polydactyly that is inherited in families.
 * ** Laurence-Moon-Biedl syndrome: ** It is a complex disorder that affects many parts of the body especially the retina that can affect the eyesight of a person (Wikipedia).
 * ** Rubinstein-Taybi syndrome: ** it is a genetic disease that involves broad thumbs and toes, short stature, distinctive facial features, and varying degrees of intellectual disabilities (Medline plus).
 * ** Smith-Lemli-Opitz syndrome: ** It is a developmental disorder that can affect many parts of the body. Basically it has the same symptoms that the Rubinstein-Taybi syndrome.
 * ** Trisomy 13: ** It is a chromosomal condition that is associated intellectual disabilities and physical abnormalities that can affect most of the body (Medline plus).
 * Prevalence of polydactyly: **
 * Diagnosis: **
 * Bibliography: **