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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.
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A living thing with a dominant and recessive gene for a trait?
A living thing with a dominant and a recessive gene for a trait is heterozygous. This individual will display the dominant phenotype for that trait but may have offspring that display the recessive trait.
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
How can alleles be?
Alleles can either be recessive or dominant. Dominant alleles produce a dominant trait which is normally seen, whereas although the recessive allele is present, the recessive trait is not normally visible. However, in cases of codominance and complete dominance the dominant trait does not completely hide the recessive trait and it can show through.
Dominant and recessive traits?
A dominant trait is a genetic trait which may cause a hereditary condition, a recessive trait disappears or goes in the background and only shows in a few generations.
Why are two recessive alleles needed for a recesssive trait to be shown?
bcoz in case of one dominant and one recessive, dominant allele will express its characters and suppresses the recessive ones. so for the expression of recessive characters both allele should be recessive.
In a hybrid individual the trait that is covered and not expressed is the what trait?
recessive
What kind of trait is spina bifida?
It is a birth defect and it is not inherited.
Trait of an organism that can be masked by the dominant by the dominant form of a trait?
A trait that masks another trait is called dominant, or a dominant trait.
Is diabetes dominant or recessive trait?
It is a recessive trait
When does a recessive trait dominant over a dominant trait?
When two recessive genes are inherited, and the portion of recessive inheritance is 51% or greater in favor of the recessive trait.
A living thing with a dominant and recessive gene for a trait?
A living thing with a dominant and a recessive gene for a trait is heterozygous. This individual will display the dominant phenotype for that trait but may have offspring that display the recessive trait.
A living thing that shows a dominant trait may be homozygous dominant or homozygous recessive for the trait true or false?
False because a living thing that shows a dominant trait can not be homozygous recessive. If it is homozygous recessive it will show recessive trait. A living thing that shows dominant trait may be homozygous dominant or hetrozygous.
What is difference between a dominant trait and a recessive trait?
A recessive trait is a trait that is not shown or expressed physically but is retained within the persons genes, whereas a dominant trait is a trait which opresses the recessive trait and is prodominantly shown or expressed physically. For example it is possible for two red-haired parents, both with recessive dark haired genes, to have a dark haired child. they must both have the recessive gene or the dominant gene of red - hair will be expressed in the child
What a recessive trait?
A recessive trait is a trait that is not dominant, and is not really seen in ones phenotype.
Not expressed when the dominant form of a trait is present?
The recessive trait isn't present when the dominant form of the trait is there. Whenever a trait is dominant trait is present it ALWAYS takes over the recessive one. the law of Dominance
Is glaucoma a dominant or recessive trait?
dominant
Is ADHD a dominant or recessive trait?
dominant
