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Is down syndrome common in certain enthnicity?
No.
Is down syndrome more common in certain races or genders?
yes
Does down syndrome affect more populations of people more so than other populations?
Down syndrome occurs across all racial, ethnic, and socioeconomic groups; however, its prevalence can vary slightly based on factors such as maternal age. Older mothers have a higher risk of having a child with Down syndrome, which may affect certain populations more if they have higher average maternal ages. Additionally, access to healthcare and prenatal screening can influence diagnosis rates in different populations. Overall, while Down syndrome can affect anyone, the impact may be influenced by demographic factors.
What human disease is caused by non-disjunction?
Down's syndrome is the most common.
Is down syndrome more common in America?
No.
Is down's syndrome more common in one ethnicity?
Caucasian
What condition results when a child is born with an extra chromosome on the third pair?
Down syndrome
What is the most common cause for down syndrome?
Down's syndrome is a disorder caused by defective genes. It is most commonly caused by parents who are elderly at the time of birth.
Is down syndrome most common with females?
Down Syndrome is spread fairly evenly between males and females. There does seem to be a slightly higher incidence among males, however.
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 is the most common chromosomal abnormality in humans?
The most common chromosomal abnormality in humans is Down syndrome, which is caused by an extra copy of chromosome 21. It occurs in about 1 in 700 births.
