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It is the result of a chromosomal abnormality, in which there is an extra chromsome on the chromosome 21 pair. This is call trisomy 21.

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What gene or chromosome is affected by down syndrome?

Chromosome 21 is tripled in Down syndrome.


Is there a specific gene for down syndrome?

No.


What age group is most affected by Down syndrome?

No age group is affected; Down syndrome is a chromosome condition that is with you at birth.


What population down syndrome is affected?

.


What gene is affected in prader willi syndrome?

if you mean chromosome its the 15th......


What organs are affected by Down syndrome?

The lungs.


If two people with Down syndrome had a baby would it have Down syndrome too?

Yes two non-Down syndrome parents can have a Down syndrome child. This is the most common situation, mainly because very few Down syndrome affected people are parents. Few Down Syndrome affected people become parents, partly because of reduced fertility associated with the syndrome, partly because of an increased risk of passing on the syndrome (very roughly from 1 in 800 to 1 in 3), and partly because of societal restrictions. ___________ Also, the parent(s) who has 1 down syndrome gene will be passed onto the child


What is the number of chromosomes affected in down syndrome?

#21


What gender is affected mostly by down syndrome female or male?

The proportion of men to women with Down syndrome is about equal.


What can down syndrome be caused by?

Down's Syndrome is caused mainly by a mutation in the gene. It is a genetic disorder, which means it was passed on from parents to offspring.


What gene or chromosome is affected by noonan syndrome?

Noonan syndrome is primarily caused by mutations in the PTPN11 gene, located on chromosome 12. This gene provides instructions for making a protein involved in cell signaling and development. Changes in this gene can disrupt normal cell signaling pathways and lead to the characteristic features of Noonan syndrome.


What gene is affected by Barth syndrome?

Barth syndrome occurs when a person is born with a mutated, or abnormal, TAZ1 (or G4.5) gene. This abnormal gene is located on the X chromosome, which is a sex-determining chromosome. Males have one X and one Y chromosome, while females have two X chromosomes.