get a test
recessive...almost everyone i know is right-handed Population size does not always correlate with dominance and recessiveness. Dwarfism, which is dominant, is not prevalent in the population It could, however, be recessive, if right-handedness is dominant
you want to know which gene thow visible one shall be seen.
Dominant alleles override recessive alleles. For instance, if there is both a dominant allele and a recessive allele present the dominant allele will be the trait that you end up with. If you have two recessive alleles, then you will have the recessive trait. :::::::::::::::brown eyes overrided blue eyes, because they are darker:::::::::::::::::: usually a darker color overpowered/override the lighter ones....i dont really know why but my science teacher said so......
What is the relationship between dominant and recessive traits? Think of it this way-- A dominant gene will suppress the expression of a recessive gene. A dominant trait is the expressed result of an organism having either one dominant and one recessive gene for that trait, OR two dominant genes for that trait. For example, brown eye color is normally dominant over blue. A recessive trait is the expressed result of having two recessive genes. For example, you need two recessive genes to get blue eyes. Each parent contributes one gene for each trait. If a parent carries a recessive gene for blue and a dominant gene for brown, that parent will have brown eyes, but can contribute either gene to a child. If the other parent has the same, the child could have two brown eyed parents but have blue eyes. Eye color is a visible trait, but each gene location can be or contribute to a trait not visible to the eye. For example, the genetic disposition to ovarian cancer is not something we can see without genetic testing. A recessive gene can be inherited and remain silent for generations, waiting to pair up with another recessive to be expressed. The knowledge that this does occur is one of the reasons why genetic testing is recommended before having children. There are so-called lethal genes that are recessive and only become problematic when they meet up with another. I know I have simplified things here, but I hope that gets to the core of your question. I recommended taking a look at the OMIM.org website to appreciate how complex this really is. That the unraveling of the miracle of the human genome has been accomplished during the last decade is truly wonderful.
Dominant and Recessive refer to different types of genes a child gains from its parents. In general, a dominant gene overpowers a recessive gene (like more people have brown eyes than blue eyes), but there are some cases where recessive genes are visible on a child over the dominant gene.
If a trait is dominant, it will appear in every generation where at least one parent has the trait. If a trait is recessive, it can skip generations and may appear in offspring of parents without the trait. Dominant traits are usually expressed in every generation, while recessive traits can "hide" and reappear later.
recessive...almost everyone i know is right-handed Population size does not always correlate with dominance and recessiveness. Dwarfism, which is dominant, is not prevalent in the population It could, however, be recessive, if right-handedness is dominant
You would know if you had a dominant gene if you exhibit the trait associated with that gene. Dominant genes override recessive genes when inherited, so if you have a dominant gene, you will express the associated trait in your physical appearance or characteristics. A dominant gene will be expressed in the presence of a recessive gene.
In genetics, dominant traits are typically represented by a capital letter, while recessive traits are represented by a lowercase letter. For example, "B" might represent brown eyes as a dominant trait, while "b" represents blue eyes as a recessive trait.
By "test cross" you can know whether it homozygous dominant or heterozygous dominant...in homozygous both alleles code for the dominant trait, in heterozygous one allele is recessive (what you called a "hidden factor"). To perform the test cross, cross a homozygous recessive with the first generation. Lets suppose tall pea tree in the first generation is hetrozygous dominant (Xx) and has alleles X (dominant) and x (recessive). When we cross it with homozygous recessive (xx) X x x :Xx xx x :Xx xx we get half offspring showing dominant trait (Xx) and half showing recessive (xx). If the first generation was homozygous (which is not possible) the result would be X X x: Xx Xx x: Xx Xx all the offspring showing dominant trait and it doesn't really happen when we cross the first generation with homozygous recessive. It means that the genotype of first generation is heterozygous (has a hidden factor or a recessive allele x). Note:You must know what the recessive and dominant allele means...In presence of a dominant allele, recessice character is not expressed but it is present is heterozygous. If both alleles are recessive (homozygous recessive) then the recessive trait is expressed. If both the alleles are dominant (homozygous dominant) obviusly the dominant trait is showed by the individual.
I don't know and don't care
Neither of the parents will be affected. There may not be any one with he disease in either of the parents families (or there might be). Since each parent is a carrier and has a 50/50 chance of passing one copy of the gene to each child 1/4 of the children will not get the gene, 1/2 will be carriers (1 copy) and 1/4 wil be affected (2 copies).
you want to know which gene thow visible one shall be seen.
Dominant alleles override recessive alleles. For instance, if there is both a dominant allele and a recessive allele present the dominant allele will be the trait that you end up with. If you have two recessive alleles, then you will have the recessive trait. :::::::::::::::brown eyes overrided blue eyes, because they are darker:::::::::::::::::: usually a darker color overpowered/override the lighter ones....i dont really know why but my science teacher said so......
Dominant and Recessive refer to different types of genes a child gains from its parents. In general, a dominant gene overpowers a recessive gene (like more people have brown eyes than blue eyes), but there are some cases where recessive genes are visible on a child over the dominant gene.
What is the relationship between dominant and recessive traits? Think of it this way-- A dominant gene will suppress the expression of a recessive gene. A dominant trait is the expressed result of an organism having either one dominant and one recessive gene for that trait, OR two dominant genes for that trait. For example, brown eye color is normally dominant over blue. A recessive trait is the expressed result of having two recessive genes. For example, you need two recessive genes to get blue eyes. Each parent contributes one gene for each trait. If a parent carries a recessive gene for blue and a dominant gene for brown, that parent will have brown eyes, but can contribute either gene to a child. If the other parent has the same, the child could have two brown eyed parents but have blue eyes. Eye color is a visible trait, but each gene location can be or contribute to a trait not visible to the eye. For example, the genetic disposition to ovarian cancer is not something we can see without genetic testing. A recessive gene can be inherited and remain silent for generations, waiting to pair up with another recessive to be expressed. The knowledge that this does occur is one of the reasons why genetic testing is recommended before having children. There are so-called lethal genes that are recessive and only become problematic when they meet up with another. I know I have simplified things here, but I hope that gets to the core of your question. I recommended taking a look at the OMIM.org website to appreciate how complex this really is. That the unraveling of the miracle of the human genome has been accomplished during the last decade is truly wonderful.
It has many causes and usually complicated causes. I don't know about the rare causes and diseases ,but the common ones are because of recessive genes like the hereditary diseases that cause over production of Oxalate ,and also the Dent's disease which is X-linked recessive condition.