Down syndrome is a chromosomal disorder. It is caused by having 1 extra chromosome (chromosome 21).
There are 3 copies of chromosome 21.
Yes.
No, Down's syndrome is only a human genetic disorder. Those with the disorder have an extra chromosome. Raccoons do not get this particular genetic disorder.
Additional chromosome
Angelman syndrome is a genetic disorder, as is Down syndrome. But they are not the same. Angelman Syndrome involves a deletion of Chromosome 15, whereas people with Down syndrome have an extra copy of Chromosome 21.
Chromosome Disorder
Down syndrome is a polyploidy (three chromosome 21s)and is considered to be a somatic disorder. The other three are genetic because they are present in the form of a defective allele on achromosome.
A genetic disorder caused by the presence of all or part of a third copy of chromosome 21.
trisomy There several types of trisomy, the most well known is probably Down syndrome, which is trisomy 21.
an error in meiotic cell division
No, you cannot catch Down syndrome. Down syndrome is a condition, not a disease or an infection. It is a disorder of the chromosomes. It is something you are born with, and is caused by a genetic mutation of Chromosome 21.
Down syndrome is a genetic disorder, a person with this disorder has it for life, it does not go away.
Down Syndrome is when there is an extra chromosome in someones DNA. More exactly it is when the 21st chromosome has an extra one.
down syndrome