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Where on earth does Down Syndrome most occur?
The number is the same everywhere.
Down Syndrome most often occurs when-?
Down Syndrome often occurs when chromosomes fail to separate properly during meiosis.
Is down's syndrome inherited?
Most cases of down syndrome are not inherited. Translocation Down syndrome can be inherited.
How are cells of a person with Down syndrome different from those of a person without the disorder?
In Down syndrome, a person's cells have an extra copy of chromosome 21. In other words, instead of a pair of chromosomes, a person with Down syndrome has three of that chromosome. Down syndrome most often occurs when chromosomes fail to separate properly during meiosis. People with Down syndrome have a degree of mental retardation. Heart defects are also common, but can be treated.
How are the cells of a person with Down syndrome different from those of a person without Down syndrome?
In Down syndrome, a person's cells have an extra copy of chromosome 21. In other words, instead of a pair of chromosomes, a person with down syndrome has three of that chromosome. Down syndrome most often occurs when chromosomes fail to separate properly during meiosis. People with down syndrome have a degree of mental retardation. Heart defects are also common, but can be treated.
What human disease is caused by non-disjunction?
Down's syndrome is the most common.
Which congenital heart defects occur in trisomy 13 trisomy 18 and down syndrome?
Congenital heart defects are common in trisomy 13 (Patau syndrome), trisomy 18 (Edwards syndrome), and Down syndrome (trisomy 21). In trisomy 13, defects often include ventricular septal defects and atrioventricular canal defects. Trisomy 18 is frequently associated with ventricular septal defects and patent ductus arteriosus. Down syndrome typically presents with atrioventricular septal defects and ventricular septal defects as the most prevalent heart abnormalities.
How does down syndrome affect you intellectual?
Down syndrome is the most common genetic cause of learning disabilities in children. People with Down syndrome often have trouble remembering things they have learned and have no motivation to remember things that has no physical meaning to them. Down syndrome causes mild to severe mental retardation. Mental retardation is recognized as impaired learning, social, and vocational ability. This means that cognitive development is stunted. Children with Down syndrome often have to learn in special Ed classes, as normal classes may not be meeting the child's learning needs. Although individuals with Down syndrome can graduate high school, most will only have the IQ of an 8 year old. Another common problem with cognitive development for children with Down syndrome is the ability to generalize - to apply what they have learned in one a situation to another situation. Children with Down syndrome often have to be taught one thing multiply times. Short attention spans have been noted in children with Down syndrome.
What is a disorder that results from trisomy of chromosome 21?
Most disorders of chromosome number that occur in humans causes symptoms so severe that the developing fetus dies, often before the woman even relizes she is pregnant. Fortunately, these disorders occur rarely. However down syndrome is the only autosomal trisomy in which the affected individual lives into adulthood. It occurs in about one in every 700 live births,
How are the cells from a person with down syndrome different from a person without the disorder?
In Down syndrome, a person's cells have an extra copy of chromosome 21. In other words, instead of a pair of chromosomes, a person with Down syndrome has three of that chromosome. Down syndrome most often occurs when chromosomes fail to separate properly during meiosis. People with Down syndrome have a degree of mental retardation. Heart defects are also common, but can be treated.
How are the cells of a person with down syndrome different from those of Person without the disorder?
In Down syndrome, a person's cells have an extra copy of chromosome 21. In other words, instead of a pair of chromosomes, a person with down syndrome has three of that chromosome. Down syndrome most often occurs when chromosomes fail to separate properly during meiosis. People with down syndrome have a degree of mental retardation. Heart defects are also common, but can be treated.
What is the most worst down syndrome?
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