4 doctors weighed in:

Is down syndrome sex-linked or autosomal?

4 doctors weighed in
1 doctor agrees

In brief: Down Syndrome

Down syndrome, also known as Trisomy 21, is an autosomal genetic disorder. Down syndrome occurs when a person has a full or partial copy of chromosome 21.

In brief: Down Syndrome

Down syndrome, also known as Trisomy 21, is an autosomal genetic disorder. Down syndrome occurs when a person has a full or partial copy of chromosome 21.
Dr. Pierrette Mimi Poinsett
Dr. Pierrette Mimi Poinsett
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Dr. James Ferguson
Pediatrics

In brief: None of the above

Down syndrome happens when an extra 21 (or piece of) 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.

In brief: None of the above

Down syndrome happens when an extra 21 (or piece of) 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.
Dr. James Ferguson
Dr. James Ferguson
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