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Spina bifida doesn't follow a strict inheritance pattern, but hereditary factors do play some role, though it is not completely understood yet.
Mothers who have had one child with spina bifida have a 3-4% chance of their next child having spina bifida, while the general population only has a 0.1-0.2% chance. In the case a pregnant woman has a family history of spina bifida, it is recommended that they take a higher dose of folic acid than other pregnant women. Here again, folic acid plays a role in preventing neural tube defects (like spina bifida), but the mechanism is not well understood.
Also, for an unknown reason, it is more prevalent in female children than in male children.
What else can I help you with?
What is the name given to the weaker trait that can be covered up by the dominant trai?
The weaker trait that can be covered up by the dominant trait is called a recessive trait. It is only expressed when an individual has two copies of the recessive allele.
If an offspring receives a pair of trait-controllers containing both a dominant and a recessive trait what happens to the recessive trait?
The dominant trait is shown in that organism with the possibility of carrying either the dominant or recessive gene to the next generation
Why are two recessive alleles needed for a recesssive trait to be shown?
Two recessive alleles are needed for a recessive trait to be shown because a recessive trait is only expressed when an individual has two copies of the recessive allele (one from each parent). If an individual has one dominant allele, it will mask the expression of the recessive allele, resulting in the dominant trait being displayed.
Is the trait for bleeder's disease dominant or recessive?
Recessive
Why wouldn't you see a recessive trait?
You wouldn't see a recessive trait if an individual has one dominant and one recessive allele for that trait. In this case, the dominant allele's phenotype will be expressed, masking the recessive trait. The recessive trait would only be visible if an individual has two copies of the recessive allele.
What kind of trait is spina bifida?
It is a birth defect and it is not inherited.
When does a recessive trait dominant over a dominant trait?
A recessive trait cannot be dominant over a dominant trait. Dominant traits are always expressed over recessive traits in heterozygous individuals because they mask the expression of the recessive trait.
What type of trait prevents the other type from being seen?
A recessive trait. When a recessive allele is with a dominant allele, only the dominanate trait can be seen.
Is diabetes dominant or recessive trait?
It is a recessive trait
In a hybrid individual the trait that is covered and not expressed is the what trait?
recessive
Is albinism a dominant or recessive trait?
Albinism is a recessive trait.
A living thing that shows a dominant trait may be homozygous dominant or homozygous recessive for the trait true or false?
False. A living thing that shows a dominant trait may be either homozygous dominant (two dominant alleles) or heterozygous (one dominant and one recessive allele) for the trait. It cannot be homozygous recessive for a dominant trait.
What is an observable trait of an organism that can mask a recessive trait?
An observable trait of an organism that can mask a recessive trait is called a dominant trait. Dominant traits are expressed in the offspring even if they only have one copy of the dominant allele, hiding the recessive trait's expression.
What is the name given to the weaker trait that can be covered up by the dominant trai?
The weaker trait that can be covered up by the dominant trait is called a recessive trait. It is only expressed when an individual has two copies of the recessive allele.
Trait of an organism that can be masked by the dominant by the dominant form of a trait?
A recessive trait is a characteristic of an organism that can be masked by the dominant form of a trait. It is only expressed when an individual inherits two copies of the recessive allele. Examples include blue eye color being masked by brown eye color.
Not expressed when the dominant form of a trait is present?
Recessive traits are not expressed when the dominant form is present. This is because the dominant allele masks the expression of the recessive allele in the heterozygous condition. Only when an individual has two copies of the recessive allele will the recessive trait be expressed.
What a recessive trait?
A recessive trait is a trait that is not dominant, and is not really seen in ones phenotype.
