Polydactylism, or having one or more extra fingers or toes, is probably the most common abnormality of development found at birth. Polydactylism is reported in about 2 per 1000 children. However, many of the simpler cases are taken care of in the nursery by the obstetrician or pediatrician and don't show up in these statistics.
More information may be found in the related link below.
yes...polydactyl is a dominant gene in humans
Yes, polydactylism is autosomal dominant.
four, unless they have a genetic mutation attached to polydactylism
This is a disorder called polydactylism...your welcome! :)
well in my family it goes, mother to son, son to daughter.
Polydactylism is the presence of extra fingers or toes. It is caused by genetic mutations, typically inherited from the parents. Often the extra digit can be surgically removed. Polydactylism sometimes occurs alone, but more often with other abnormalities, such as cleft lip or palate, dental or vertebral deformities, and psychomotor retardation. Some of these can be corrected as well, so if your child is suffering from polydactylism they should be checked for other problems.
Polydactyly means extra fingers or toes.Polydactylism
Yes.Answer:Having extra bones (fingers) is a recognized medical condition. It is called polydactyly or polydactylism
Polydactylism is a condition where a human or animal has more of something than they should. There are no side effects of this condition but it does cause the person to be self conscious.
The individual is a "polydactyl ". The condition is "polydactyly" or "polydactylism", a congenital anomaly. The extra digits are referred to as "supernumerary digits".
The term Hemingway is used for cats, and is not breed specific: it is a cat with extra claws or toes. (they display polydactylism aka polydactyly or hyperdactyly)
Polydactylism (having more than the average number of toes), is fairly uncommon in horses and comes in two basic forms. Teratological form is where the limb is extensively deformed and the horse will typically be put to sleep. The atavistic form is more treatable and requires 'cosmetic' surgery. The excess toes will be amputated and the skin closed over the leg, usually the outcome for this type of surgery is good.
The family (and the individual with polydactylism) might get a lot of questions about the disorder. The polydactyl person might have mobility issues as well, so the family may have to help them along.
Almost every human is born with 5 toes on each foot. However, a rare few are born with 6 or more in the genetic condition known as polydactylism.
Yes, cats naturally have five claws on each front paw and four claws on each back paw (except in cases of polydactylism, in which the paws may have extra claws and toes).
Just because an allele is dominant does not mean that it is necessarily common.How common a version of a gene is (i.e. its frequency in a population) depends on how it affects an organism's chance of surviving to reproduce. Natural selection may favor a recessive allele of one gene and a dominant allele of another.
According to Guinness, the greatest number of toes on a living person is 13. The two people to share this record are Pranamya Menaria and Devendra Harne, both from India. Each person also has 12 fingers. The condition of having more than the regular number of digits is known as polydactylism or syndactylism.
The short answer is 50%; however, there are many factors that influence this number. This percentage is limited to cats, although polydactylism does occur in most species, including canines. There are currently not enough completed studies to list percentages of polydactylism in other species. Polydactylism is considered, by most, to not be a problem. In the world of genetics, the polydactyl gene (Pd gene) is an autosomal dominant gene. This means that you cannot have a polydactyl offspring without having at least one polydactyl parent, and there are no known recessive genes that would allow the trait to pop-up generations down the road. They either have the poly Pd gene and express it, or they do not and it cannot be passed on to future generations. Although many breeds of cats can be polydactyl, one specific registered breed, the Maine Coon, seems to be most notable of the breeds that express polydactylism. This is due to the fact that the original stock (or Foundation cats) was selected from the area of Eastern United States and Canada and in particular, the State of Maine. This wild, or feral, population was estimated to be 40% polydactyl, although this number is not documented well enough to be considered completely accurate. That percentage of polydactyl Maine coon cats does indicate that if left in the wild with random breeding, the number will approach the 50% mark in the absence of any outside influences (mainly man). Once that specific breed was established, it was frowned upon by Cat Associations and "elitist breeders." Pressure was put onto Maine Coon breeders to cull the polydactyls because of this genetic deformity of their toes. The Maine Coon polydactyl was facing near extinction a few years back, with an estimated population of 1 to 2% of the registered Maine Coon breed. Today there is a movement to re-establish the Maine Coon polydactyl back into breeding program and into the shows of the various Cat Associations. Although this trend is being seen more in Europe, there is resurgence in the Western hemisphere as well. So, referring to the cat population in general, polydactylism is still somewhat rare; however, most individual litters involving a polydactylism has about 50% or more of the offspring being polydactyl. Again, one parent must be a polydactyl themselves or the gene cannot be passed along. If one parent is a polydactyl and one is not, the chance of the litter being polydactyl is 50%. Quite often the overall percentage will be higher due to the fact that a homozygous parent can be involved (two copies of the Pd gene). This will in theory give you a 100% poly litter. In other cases, where both parents are polydactyls (but not homozygous), it is said that, statistically, they will have a 75% poly litter. This is a harmless genetic trait and is in no way the result of congenital defects, environmental factors, or the result of other genes or breeding combinations. A non-commercial website with more information about feline polydactylism: http://www.polytrak.net tracks these numbers and trends into a database for observation. Presently it is showing 420 kittens listed of which 58% are polydactyl. This number reflects the average of the three above listed breeding combinations. You can find much more information about polydactyl Maine Coons on the above site, or you can search the internet for Maine Coon polydactyls and find many websites that discuss this topic.
According to Guinness, there is a tie for this record. Pranamya Menaria (India; b. August 10, 2005) has 25 total - 12 fingers and 13 toes. It is the result of a condition called Polydactyly and Syndactyly. Devandra Harne (India; b. January 9, 1995) also has 25 - 12 fingers and 13 toes - as a result of the condition polydactylism.
One reason is something called trisomy 31 which is a birth defect. Polydactyly is very uncommon but some families do pass it on as it is a dominate gene. But only about 500 cases are seen per year.People of Asian and Caucasian decent are more likely to have radial (on the thumb side) polydactyly. Ulnar (on the little finger side) polydactylism is more common in people of African decent.
The risk of birth defects and congenital diseases increases the more closely related the parents are. Deformities, such as polydactylism (many fingers or toes) would be even more common in pairings of siblings than of first cousins, but the risk, while elevated, is not huge and is definitely not a certainty. Many people have successfully had children with their first cousin. Charles Darwin married his first cousin, who bore him a number of children. The practice is discouraged in some communities, but not in others.
No... Just Another Internet RumorThis is a rumor that started based on a supposedly Photoshop-manipulated photo of Halle Berry walking in flip flops with, what appears to be, a blister/bunion or awkwardly shaped pinky toe. Other informationHalle Berry played a mutant in the "X-Men" films, but even then Storm only had 5 toes on each foot. And, by "mutant" in this case, it would mean a perfectly harmless mutation called Polydactylism, where an organism is born with one or more extra fingers or toes.(Click on the Related link to see the images.)
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