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Phenylketonuria is an autosomal recessive genetic disorder. The enzyme phenylalanine hydroxylase is necessary to metabolize phenylalanie, but when this enzyme doesnt work, phenylaline accumulates and is detected in the urine. The disease is detected during pregnancy, and if treated right away the newborn can develop normally. However, if left untreated, the brain will not develop properly.
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What is caused by a dominant allele located on an autosome?
A dominant allele located on an autosome will be expressed phenotypically in the individual, meaning it will be visible in the physical characteristics of the organism. This dominant allele will mask the effects of any recessive allele at the same locus.
Are freckles dominant recessive or dominant dominant?
Freckles are considered a dominant trait, as they are caused by a dominant allele. This means that individuals only need to inherit one copy of the allele from either parent in order to have freckles.
Is a bent little finger a dominant or recessive allele?
I read in freshman biology that it is recessive. According to Barry Starr, Stanford University geneticist, bent pinky is a dominant trait.
How do dominant and recessive alleles affect an offsprings phenotype?
The traits inherited depends upon the alleles that have been passed on from the father and mother.The traits that are exhibited is called as the phenotype. Dominant allele needs only one copy to be expressed.For example in a pea plant "T" represents the tall dominant allele and "t" the short recessive allele .TT - when there are two dominant alleles the pea plant will express the tall trait. The pea plant is tall.Tt - when there is one dominant and one recessive allele the pea plant will still express the tall trait.In this case the dominant allele masks the recessive allele and the pea plant is still tall.tt - when there are two recessive alleles the pea plant will express the recessive trait and the pea plant is short.For a recessive trait to show up there should be a pair of recessive alleles.
What is the phenotype of an individual with one allele for dimples and one allele for no dimples?
a example of a gene
Is the allele causing huntington's disease dominant or recessive?
Huntington's disease is caused by a dominant allele
What is a person who has a dominant and one recessive copy of a disease gene?
A person who has one dominant and one recessive copy of a disease gene is typically considered to be affected by the condition if the disease is caused by the dominant allele. In this case, the dominant allele's effects will manifest, overshadowing the recessive allele. The individual may not express traits associated with the recessive allele, as the dominant trait takes precedence.
What is caused by a dominant allele located on an autosome?
A dominant allele located on an autosome will be expressed phenotypically in the individual, meaning it will be visible in the physical characteristics of the organism. This dominant allele will mask the effects of any recessive allele at the same locus.
Is hitchhikers thumb dominant or recessive allele?
Hitchhiker's thumb is caused by a dominant allele. Individuals with at least one copy of the dominant allele will exhibit the thumb's characteristic flexibility, while those with two recessive alleles will have a straight thumb. This trait is a classic example of simple Mendelian inheritance.
Are freckles dominant recessive or dominant dominant?
Freckles are considered a dominant trait, as they are caused by a dominant allele. This means that individuals only need to inherit one copy of the allele from either parent in order to have freckles.
Is a bent little finger a dominant or recessive allele?
I read in freshman biology that it is recessive. According to Barry Starr, Stanford University geneticist, bent pinky is a dominant trait.
How do dominant and recessive alleles affect an offsprings phenotype?
The traits inherited depends upon the alleles that have been passed on from the father and mother.The traits that are exhibited is called as the phenotype. Dominant allele needs only one copy to be expressed.For example in a pea plant "T" represents the tall dominant allele and "t" the short recessive allele .TT - when there are two dominant alleles the pea plant will express the tall trait. The pea plant is tall.Tt - when there is one dominant and one recessive allele the pea plant will still express the tall trait.In this case the dominant allele masks the recessive allele and the pea plant is still tall.tt - when there are two recessive alleles the pea plant will express the recessive trait and the pea plant is short.For a recessive trait to show up there should be a pair of recessive alleles.
What is the phenotype of an individual with one allele for dimples and one allele for no dimples?
a example of a gene
Is it true that a defective allele always recessive and a normal allele always dominant?
No, a defective allele is not always recessive, and a normal allele is not always dominant. The relationship between alleles can be more complex and dependent on specific genetic mechanisms. Dominance and recessiveness are general terms used to describe the relationship between two alleles at a specific gene locus.
Is waardenburg syndrome caused by a dominant or recessive allele?
Waardenburg syndrome is typically inherited in an autosomal dominant pattern, meaning that only one copy of the mutated gene is needed to develop the condition. However, there are rare cases where it can be inherited in an autosomal recessive pattern, requiring two copies of the mutated gene.
Is hemophillia caused by a recessive allele?
yes
Being a carrier of sickle cell anemia means?
sickle cell anemia is caused by a recessive allele. so for it to affect someone, it means that the person must have received both recessive alleles from their parents. Being a carrier means that you have the recessive allele from one of your parents, but you have a normal dominant allele from the other parent, that means you are not affected by it but you are carrying it.
