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Doctor insights on: Down Syndrome Dominant Or Recessive

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Is Down syndrome dominant or recessive?

Is Down syndrome dominant or recessive?

Neither: Down syndrome happens when an extra 21 chromosome is present in all the cells of the body. It happens before conception when the donor egg fails to shed one of its 21 chromosomes in the formation of the egg & the male 21 joins the female pair & creates an embryo with 3 number 21's. ...Read more

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Dr. Keith Vaux
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Dr. Kathryn Akin
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Down Syndrome (Definition)

Down syndrome is a genetic condition in which there is an extra chromosome present. Symptoms may range from mild to severe. Children with Down syndrome share a common physical appearance including a flattened nose, small ears, a small mouth, upward slanting eyes, and a single crease in the ...Read more


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I was wondering is Down syndrome dominant or recessive?

I was wondering is Down syndrome dominant or recessive?

No autosomal: Down syndrome happens when an extra 21 chromosome is present in all the cells of the body. It happens before conception when the donor egg fails to shed one of its 21 chromosomes in the formation of the egg ; the male 21 joins the female pair ; creates an embryo with 3 number 21's. It has nothing to do with traits or mutations in the gene code. ...Read more

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Dr. Keith Vaux
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Is it true that Down syndrome is dominant or recessive?

Is it true that Down syndrome is dominant or recessive?

Neither: Down syndrome is neither dominant nor recessive. Down syndrome occurs due to there being 3 number 21. ...Read more

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I am doing a presentation for my class on down syndrome and I need to know why it isn't dominant or recessive. P.S. I need a simplified answer

I am doing a presentation for my class on down syndrome and I need to know why it isn't dominant or recessive.

P.S. I need a simplified answer

Seek info here: Lots of HT doctors have answered this for others - here's a start. Just dig a bit further, but it's a good reply. Source: HealthTap, https://edc1.healthtap.com/user_questions/22610 ...Read more

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Is Down syndrome an autosomal dominant gene ? Please advise!

Is Down syndrome an autosomal dominant gene ? Please advise!

Not autosomal: Down syndrome happens when an extra 21 chromosome is present in the cells of the body. It happens before conception when the donor egg fails to shed one of its 21 chromosomes in the formation of the egg & the male 21 joins the female pair & creates an embryo with 3 number 21's. It has nothing to do with autosomal traits or mutations in the gene code. ...Read more

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Is Down syndrome sex linked/recessive/or dominant?

Is Down syndrome sex linked/recessive/or dominant?

None of the above: Down syndrome happens when an extra 21 chromosome is present in all the cells of the body. It happens before conception when the donor egg fails to shed one of its 21 chromosomes in the formation of the egg; the male 21 joins the female pair & creates an embryo with 3 number 21's. It has nothing to do with traits or mutations in the gene code. ...Read more

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Dr. Keith Vaux
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Down syndrome is autosomal dominat?

Down syndrome is autosomal dominat?

No autosomal: Down syndrome happens when an extra 21 chromosome is present in all the cells of the body. It happens before conception when the donor egg fails to shed one of its 21 chromosomes in the formation of the egg & the male 21 joins the female pair & creates an embryo with 3 number 21's. It has nothing to do with traits or mutations in the gene code. ...Read more

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How can you inherit down syndrome?

Depends on parents: An unaffected mother or father could have a balanced(normal) set of chromasome material where a piece of one 21 chromasome is stuck on another.If the egg or sperm had the normal 21 and an extra 21piece hidden on another chromasome, they could pass it to the baby. It only takes an extra piece of 21 to cause ds.It is important to study ds to verify type, as translocation ds can recur each pregnany. ...Read more

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If someone in your family has down syndrome, is there a larger risk that your baby will have down syndrome?

Slight risk: Most down syndrome is sporadic. A few patients with down syndrome have the extra 21 chromosome translocated on to another chromosome. In some of these cases the parents can carry the translocated chromosome in a balanced form and they and other family members could be at increased risk to have children with the syndrome. ...Read more

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What is down syndrome?

What is down syndrome?

Chromosome defect: Ds is one of the more common chromosome(c) defects that can survive pregnancy (many others miscarry).Eggs are supposed to have a single 21c & combine with the 21 from dads normal sperm.Here a pair of moms 21c +dad's 21 creates a baby with the extra 21c in all tissues.This extra material confuses the creation of body parts causing ds..Various prenatal tests can pick up signs early on. ...Read more

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Dr. Keith Vaux
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