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POLYDACTYLY

By: Maria and Rhyannon

Polydactyly is a Genetic disorder of the seventh

chromosome which results in extra fingers

or toes. Polydactyly actually means “Extra

Digits.”

WHAT IS IT?

There aren’t necessarily symptoms

that come with the disorder other than the obvious extra fingers and toes.

Symptoms and Prognosis

It is very easy to tell if you have this disorder… Count your fingers and toes. If you have more

than ten toes or fingers, you probably have

Polydactyly.

Diagnosis

Polydactyly comes in two different forms. One,

Postaxial is the addition of a toe or finger that is easy

to miss. Preaxial is a growth of another finger

or toe attached to an existing finger or toe.

Two Forms

Postaxial

Preaxial

Polydactyly can occur by itself as a mutation. It is also

a disorder that is passed from parent to child. When it

is inherited, it is known as an Autosomal dominant

gene. The disorder is located on one of the short legs of

chromosome 7

How is it inherited?

You only need to get the abnormal gene from one parent in order to inherit the disease. One of the parents may often have the disease.

Autosomal Dominant

There are no test to tell you whether or not you

are a carrier. If you have the disease, then you are

a carrier. There are no cures for this disorder. The only treatment is

surgical removal.

Tests, Cures, and Treatment.

Some races and genders are more likely to get Polydactyly

than others.

White Male- 3.3/1000 birthsWhite Female- 0.6/1000 birthsBlack Male- 13.5/1000 birthsBlack Female- 11.1/1000

Statistically Speaking…

Discovery

Polydactyly was discovered by Tyler Steven

Hayden

Hound Dog Taylor- American blues singer and guitarist.

Sid Wilson- Of Slipknot Antonio Alfonseca- Major league relief pitcher for Teams such as Phillies, Rangers, and the Braves.

Gemma Christina Arerton- an English Actor

Celebrities with Polydactyly