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How is progeria inherited?
According to the Progeria Research Foundation progeria is caused by a 'sporadic autosomal dominant' mutation.A mutation is a change in a gene.Sporadic means that the mutation occurs at random, and is not usually inherited from a parent.Autosomal means that the gene is located on one of the 22 pairs of non-sex chromosomes in the cell nucleus. In fact research has shown that the gene is on chromosome number one.Dominant means that you only need one copy of the gene to develop the disease. So one chromosome in the pair can have a normal gene and the other chromosome can have the mutant gene.
Why is it possible that a majority of people may display a recessive trait?
It is possible for many people to display a recessive trait because the people have two recessive genes. Dominant simply means it will trump a recessive gene, it does not mean it is the most widely seen gene in a species.
What are some genotype examples?
A Phenotype, physical appearance.
What is the name of the disease that causes rapid aging?
Progeria http://en.wikipedia.org/wiki/Progeria
How often does progeria occur?
Progeria occurs in 1 of every 4 to 8 million newborns.
Is progeria a recessive or dominant disorder?
yes it is, only 1 mutation to the lmna gene is sufficent for someone to express traits regarding progeria
What is an organism that has a dominant and a recessive copy of a gene?
dogs have a dominant and a recessive copy of a gene
What gene will exhibit its traits even in a prensesce of a recessive gene?
A dominant gene will exhibit its traits even in the presence of a recessive gene. This is because the dominant gene masks the expression of the recessive gene when present in the same individual.
Is a situation in which a dominant allele completely masks a recessive allele for a gene.?
If you have 2 dominant alleles, the gene will be dominant, if you have 2 recessive alleles, the gene will be recessive. But if you have 1 recessive and 1 dominant, the Dominant allele will mask the recessive one.
How many copies of a recessive gene does it take to overpower a dominant gene?
It takes 8 copies of a recessive gene to overpeower dominant gene
Genes that are only seen when paired with a recessive gene?
if u have a recessive gene with a recessive gene then u can see the recessive gene but if you have a dominant gene with a recessive gene you can only see the dominant gene hope that helps:)
A gene is recessive when?
Most genes have two copies of each gene with dominant gene "trumping" the recessive one. The gene is recessive because it is said not to do much of anything unless paired with another recessive gene, but if paired with a dominant gene, the dominant gene wins.
Can two dominant genes equal a recessive gene?
it could but then u would be deformed but usually it cant
Can a recissive gene be dominant?
No, a recessive gene cannot be dominant. In genetics, dominant genes are expressed over recessive genes when present in an individual's genotype. This means that if a gene is recessive, it will only be expressed if an individual inherits two copies of that specific recessive gene.
Can a recessive gene be hidden from a dominant?
The dominant gene will always "cover up" the recessive gene, although there are instances of codominance, in which both phenotypes will be displayed, because one gene is not completely dominant over the other. There is also what is called 'incomplete dominance', when the actual phenotype is somewhere between the two.
What is recessive gene and dominant gene?
A dominant gene is always expressed if present, and the recessive gene is only expressed with the homozygous recessive genotype. For example, if the dominant gene is red (represented by the letter R) and the recessive gene is white (represented by the letter r), then a homozygous dominant organism's genotype will be RR, and its phenotype will be red. If the organism is homozygous recessive, then the genotype will be rr and the phenotype will be white. If the organism is heterozygous, then the genotype will be Rr, and the organism will be red.
The weaker of two genes is called what?
The weaker of two genes is called the recessive gene. In the presence of a dominant gene, the recessive gene is not expressed in the organism's phenotype.
