The number of carriers has not yet been identified but the number of people with angelman syndrome is 1,854,057,000. To figure out if your child has this disease before it is too late look for small head, big mouth and frequent seizures. It is a rare disease but can still happen to anyone.
It's relatively rare, occurring in around 1 in 16,000 people and the number of carriers is unknown. Researchers don't know what causes the genetic changes that result in Angelman syndrome.
Bassen-Kornzweig syndrome is inherited as an autosomal recessive disorder, which means that parents of affected individuals are themselves unaffected carriers, and that they have a 25% risk of having an affected child.
The majority of affected individuals are males. Females are carriers, but are not normally affected. This indicates that the X chromosome is one of the locations for color blindness.
Affected individuals have two nonfunctional copies of the GALC gene. Parents of an affected child are healthy carriers and therefore have one normal GALC gene and one nonfunctional GALC gene
Morquio syndrome is synonymous with type IV mucopolysaccharidosis, and can only be inherited. This is done so in automsomal recessive manner, meaning both parents must be carriers to be born with the syndrome
Usher syndrome is inherited as an autosomal recessive trait. The term autosomal means that the mutated gene is not located on either of the chromosomes that determine a person's sex; in other words, both males and females can have the disorder and can pass along the disorder to a child. The word recessive means that to have Usher syndrome, an individual must receive a mutated form of the Usher syndrome gene from each parent. If a child has a mutation in one Usher syndrome gene but the other gene is normal, he or she is predicted to have normal vision and hearing. Individuals with a mutation in a gene that can cause an autosomal recessive disorder are called carriers, because they "carry" the gene with a mutation but show no symptoms of the disorder. If both parents are carriers of a mutated gene for Usher syndrome, they will have a one-in-four chance of having a child with Usher syndrome with each birth.
Mosquitoes feed on infected humans, or on primates (monkeys) which are less affected but are carriers. The mosquitoes carry the bacteria to others. Where there are no infected individuals, the disease does not exist (as in Asia). However, it is endemic in tropical areas of Africa and South America.
carriers are a parent carrying the particular recessive gene for a disease but is not affected by that disease. However, its offspring will have that gene as dominant increasing its chances of being affected by that disease if the parent mates with another parent of the opposite gender who is also a carrier.
A few cases of the disorder in girls have been reported. Women carriers usually do not have any symptoms. Women carriers can occasionally develop inflammation of the joints (gout ) as they get older.
A few cases of the disorder in girls have been reported. Women carriers usually do not have any symptoms. Women carriers can occasionally develop inflammation of the joints (gout ) as they get older.
Males and females can be carriers, male carriers can only pass on to their daughters, they will be carriers as well have a premutation. Females can pass on to their sons or daughters, they will have the premutation or the full mutation.
Females are considered to be carriers. This is because females have another X chromosome without the mutation that prevents them from getting this disease. If a woman is a carrier, she has a 50% risk to pass on her X chromosome with the mutation.
CS is inherited in an autosomal recessive pattern. In order for a child to be affected by CS, he or she must inherit a mutation (-) in the same CS gene from both parents. The parents and other "carriers" of a single CS gene mutation remain healthy. Once a couple are known to carriers, they have a 1 in 4 (25%) chance of having another child with CS. http://www.cockaynesyndrome.net/main/AboutCS.aspx