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Down syndrome is not a recessive trait. Down syndrome is caused by a third copy on chromosome 21 and is present at conception or shortly after. It is mostly a random (and relatively common) occurrence, unless it is of the translocation type which is rare and genetic. Therefore it is NOT a trait.
Wiki User
∙ 8y ago
Wiki User
∙ 15y agoDown syndrome is not necessarily a recessive trait, per se, since you can have differing degrees of Downs. Additionally, recessive trait would imply inheritance from parents caused the disorder, and in most cases this is not true. Down syndrome is cause by an extra chromosome on the 21st chromosome, this is usually a result of a nondisjunction event, that is improper cellular division during embyronic development, not as a result of inheriting parental allells.
While Downs can be influenced by family history, it is not generally considered a recessive trait, as recessive would imply either the individual has it, or dosen't, with no intermediate. However there are many variable intermediates for people with Downs, from those who are barely effected and only show some physical characteristics to those who are profoundly retarded.
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Is Cockayne Syndrome a dominant or a recessive trait?
Cockayne syndrome is a recessive trait.
Is Down syndrome a dominant or recessive?
Down syndrome is neither dominant nor recessive. Actually, it is considered to be an "autosomal" trait. This occurs when there is damage to the chromosome.
Is down syndrome a dominant trait or recessive trait?
Down syndrome is neither dominant nor recessive.It is "autosomal" or "other"; it is simply an error in the translation process of Chromosome 21 (three copies instead of two). Instead of 46 chromosomes, a person with Down syndrome will have 47.
A trait that is hidden?
The trait that is hidden is recessive trait.
Is apert syndrome dominant or recessive?
Recessive, but dominant in some rare cases.
What chromosome is affected by meckel syndrome?
Meckel Syndrome (type 1)is an autosomal recessive trait carried on chromosome 17.
In a hybrid individual the trait that is covered and not expressed is the what trait?
recessive
What kind of mutation is triple x syndrome?
Most cases of triple X syndrome are not inherited so it is not a dominant or recessive trait.
Is down syndrome cause by dominant or recessive?
Down syndrome is neither caused by dominant or recessive chromosomes it is simply caused by an error in the translation process of chromosome 21.
Can Down syndrome spread to other people?
No, Down syndrome is not contagious. It is a genetic/chromosomal difference - some may equate it to a birth defect, others to a birth enhancement
Is diabetes dominant or recessive trait?
It is a recessive trait
Is down syndroe a dominant trait or ressive trait?
It is caused by the addition of the 21st chromosome, it is not inherited and so is neither dominant or recessive but it is highly correlated with the age of mothers. If the mother is 30, it is 1 in 910 chance of down syndrome, and 1 in 28 at age 45.
