People with Down syndrome has an extra chromosome in the 21st pair. The normal amount of chromosomes is 56 single chromosomes (23 pairs). A person with down syndrome has 57 chromosomes. Therefore, they look and act more different than people without the disorder. Instead of looking like their parents, people with down syndrome look more like other people who has down syndrome.
To start, a healthy human being with no birth defects will have 46 chromosomes in every single somatic cell, except for sex cell/gametes, but those with Down syndrome will have 47 chromosomes in their somatic cells. This will cause defects such as lower mental ability and distinct facial features.
It can be caused by o because of the number of chromosomes the child has when it is born. It can also be because the infant had a rough birth and it caused that to happen. The number of chromosomes you are supposed to have is 46, but the children with 47 chomosomes are the ones that are chaacterized to have down sndrome
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Down Syndrome is set of mental and physical symptoms that result from having an extra copy of chromosome 21.
Even though people with Down syndrome may have some physical and mental features in common, symptoms of Down syndrome can range from mild to severe. Usually, mental development and physical development are slower in people with Down syndrome than in those without it.
People with the syndrome may also have other health problems. They may be born with Heart disease. They may have dementia. They may have hearing problems and problems with the intestines, eyes, thyroid and skeleton.
The chance of having a baby with Down syndrome increases as a woman gets older. Down syndrome cannot be cured. However, many people with Down syndrome live productive lives well into adulthood.
When the egg has been fertilized the egg will split into different cells and keep on splitting but in some cases they will not split properly and an extra cromisone will be added so instead of 2 in each cell there will be 3.
the person with the disorder will lead to mental issues and the person without it will not.
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