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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

Dr. Kathryn Akin
654 Doctors shared insights

Down Syndrome (Definition)

A genetic chromosome 21 disorder causing ...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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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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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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I'm doing a science project on down syndrome and my teacher wants to know dominate recessive or chromosomal (how common) can you help?

I'm doing a science project on down syndrome and my teacher wants to know dominate recessive or chromosomal (how common) can you help?

Do your homework: There is a simple answer but this is not where you should go to get it. Your instructors are going to want you to provide your references to any data you come up with. Your question suggests you are too young to be submitting questions to HT. You must be 16. ...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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What causes down syndrome?

What causes down syndrome?

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? ...Read more

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Is Down syndrome inherited?

Is Down syndrome inherited?

Not usually: The only way to inherit Down syndrome is if one parent has Down syndrome and passes 2 copies of chromosome 21. Few people with ds reproduce, so that is not usually a factor. ...Read more

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How is down syndrome treated?

Medical/education: Children with Downs Syndrome have special medical and educational needs that should be determined in each individual. Doctors and Psychologists or educational specialists can determine what the needs are and how best to meet them. ...Read more

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Why is my baby down syndrome?

Why is my baby 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.In ds the pair of moms 21c +dad's 21 creates a baby with the three 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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How is Down syndrome treated?

Down syndrome: Down's syndrome may be detected before birth (prenatally) or after birth (postnatally). It cannot be cured but treatment and support can help someone with Down's syndrome to lead an active life. A number of advice and support groups are available for people with Down's syndrome and their families and carers. ...Read more

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Why does Down syndrome happen?

Mistake in chromosom: During the formation of normal eggs or sperm the chromosome (c) pairs are supposed to split leaving one of each in the egg/sperm. At conception the joining of egg/sperm brings together the pair & as tissue grows it has the proper number in each cell. With ds the egg has a pair of 21c and at conception a triple 21 is created. All cells derived after will have an extra 21 & become a ds child. ...Read more

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How is Down syndrome inherited?

How is Down syndrome inherited?

Rarely: Downs syndrome is usually related to a trisomy defect that develops during the initial cleavage of the cells during primary fetal development. A form can occur as a translocation that may be carried by a parent. An assumption is that the 21 chromosome may be damaged by maternal age or by some environmental factor that then results in downs syndrome. Most cases are just by chance. ...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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How does a person get down syndrome?

Chromosomal abnormal: Down syndrome is caused be a chromosomal abnormality tha occurs at the time of fertilization. It is usually associated with the fertilization of an egg carrying2 number 21 chromosomes. ...Read more

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