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21 st chromosome it is also call Trisomy 21 because the 21st chromosome has three instead of the normal two.
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What gene or chromosome is affected by down syndrome?
Chromosome 21 is tripled in Down syndrome.
What chromosome is the language gene found in?
Chromosome 7
Which chromosome is found only in males?
Y chromosome
How many copies of Chromosome 21 are there in someone who has Down syndrome?
3 Pairs of Chromosome 21There are 47 chromosomes in someone with Down syndrome (most people have 46); the 21st pair has an extra chromosome. Down syndrome is also known as "Trisomy 21" - a reference to the fact that someone with Down syndrome has 3 pairs of chromosomes 21.
Which chromosome number is the gene for narcolepsy found on?
The gene associated with narcolepsy is found on chromosome 12 in humans. This gene is called HLA-DQB1*06:02 and is a key genetic factor contributing to susceptibility to narcolepsy.
Is Down syndrome a genetic disorder or a chromosome disorder?
Down syndrome is a chromosomal disorder. It is caused by having 1 extra chromosome (chromosome 21).
Down syndrome is an example of?
Chromosome Disorder
Down syndrome is usually caused by an extra copy of what chromosome?
Down syndrome occurs because of the extra chromosome on chromosome 21. If you go onto google images and type in karyotype of Down syndrome, you will find a picture of the extra chromosome. Instead of having two chromosomes on chromosome 21, there is an extra. Type your answer here...
How do you detect if you have down syndrome?
Autosomal means that it concerns an autosome--a chromosome other than a sex chromosome. Down syndrome is caused by an additional copy of the 21st chromosome. Since the 21st chromosome is not a sex chromosome, Down syndrome is autosomal.
What are the causes of heredity diseases?
The causes of a hereditary disease is a missing chromosome, and extra chromosome. Like in Down Syndrome there is an extra chromosome 26.
Alcoholism is found in what chromosome?
They isolated three genes on chromosome 15 -- GABRA5, GABRB3 and GABRG3
What chromosome is ADHD found on?
The precise chromosome is not known; future research may yield results.
