Question 1

what causes down syndrome?

Accepted Answer

DNA defects: Chromosome 21 seems to be the cause.  Two most common types are trisomy 21 where ther is an entire extra chromosome in each cell.  The other is translocation where only an extra piece of the chromosome is found.  It can be an isolated defect or an inherited defect.  Rare exotic forms include polyploidy and haploid forms and chimeras.  Sorry you asked?

Question 2

what are the different causes down syndrome?

Accepted Answer

Downs syndrome: Trisomy 21 when there is an extra chromosome at 21, mosaicism when some cells have trisomy and others not, robertson translocation [n which long arm of 21 chromosome is attached to another chromosome often chromosome 14.

Question 3

why are women the cause of down syndrome more often than men are?

Accepted Answer

Non dysjunction: This term means that one of the earliest divisions of the embryo after conception delivers 3 number 5 chromosomes to a daughter cell and only one to the other daughter cell. The trisomy cell survives to create down's syndrome babies.

Question 4

i'm wondering why are women the cause of down syndrome more often than men?

Accepted Answer

Selection variables: If a woman generates an egg that contains 2 rather than 1 chromosome 21's, the addition of a 21 from the sperm will cause the trisomy 21 condition. Some of these miscarry & some deliver. When males generate a sperm that carries irregular information, there is speculation that the ones with bad information do not swim as well & thus can't pass the defect.

Question 5

what are the causes of people with down syndrome to live fifty years or less?

Accepted Answer

Poor health: The expected lifespan of a ds patient born today exceeds 60 years if they have access to the basic medical care & dietary resources of average individuals. They do have higher risks for a variety of health issues involving their glands (thyroid, diabetes) their bones (scoliosis, joint pain & weakness) and the impact of obesity is much worse for their overall health.

Question 6

are there genetic causes of down syndrome?

Accepted Answer

Yes: Down syndrome is a genetic condition caused by an extra copy of chromosome 21.  However, it is usually not inherited in families.

Question 7

does teething cause down syndrome?

Accepted Answer

No: Down syndrome is a genetic problem and has nothing to do with teething.

Question 8

which type of mutation causes down syndrome?

Accepted Answer

No : Down syndrome is an abnormality of chromosome numbers, not a trait or mutation in the gene code. During conception only one of chromosome of each pair is given by both parents to the fertile egg.If a parent adds their  2 nbr 21chm to the other parents nbr 21, 3 end up in the egg ; the excess 21 causes the  all the problems.Rare forms are causes by a extra piece of a 21, but that's another issue.

Question 9

what are the causes of people to be born with down syndrome?

Accepted Answer

Extra chromosome 21: A woman's chances of giving birth to a child with Down syndrome increase with age because older eggs have a greater risk of improper chromosome division. By age 35, a woman's risk of conceiving a child with Down syndrome is 1 in 400. By age 45, the risk is 1 in 35. However, most children with Down syndrome are actually born to women under age 35 because younger women have far more babies.

Question 10

what causes high risk of my little one having down syndrome?

Accepted Answer

Advanced mom age: The risk of having a baby with any form of chromosome defect increases as the  mother ages. It is lowest in her early 20's and rises above 1% at 40 and approach 5% at 50. It is a fact of life, that environmental toxic factors may eventually cause changes to the eggs that yield this risk.

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What are the causes of people with down syndrome to live fifty years or less?

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Are there genetic causes of down syndrome?

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Does teething cause down syndrome?

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