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What is it called when a person has two recessive alleles for sickle cell trait?
Wiki User
∙ 11y ago
they get the disease
Wiki User
∙ 11y ago
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How is the sickle cell allele maintained through natural selection?
Individuals with two recessive alleles have very high rates of reproduction.
Is there any evidence that the traits shared by most of the population is not controlled by a dominant allele explain?
If the allele is beneficial then recessive alleles will drive to fixation in the population. Sickle cell trait is a fair example of this.
It is far more common to find human genetic disease caused by alleles than by alleles because?
You are repeating yourself. If a dominant gene inhibits reproduction, it will eventually work itself out of the population. Whereas a recessive gene can sporadically pop up. However, a gene such as a "cancer gene" might not inhibit reproduction, and thus could perpetuate at a higher rate in either a dominant or recessive form. There is a theory called "Heterozygote Advantage" that certain genetic disorders such as Cystic Fibrosis or Sickle Cell Anemia may actually provide a protective advantage when found as a heterozygote recessive, but is deadly when the person inherits both genes.
Sickle cell anemia results from a defective?
Sickle cell disease is a group of disorders that affects molecule in red blood cells (hemoglobin) that delivers oxygen to cells throughout the body. Person with this disorder have typical hemoglobin molecules called hemoglobin S, which can distort red blood cells into a sickle, or crescent, shape.
For sickle-cell disease assume S is the dominant allele and s the recessive allele Which genotypes are possible for offspring of a carrier (Ss) and a person who lacks the sickle-cell allele (SS)?
SS,Ss
How is sickle cell alleles maintained through natural selection?
Heterozygous induviduals pass the dominant and recessive alleles to offspring
How is the sickle cell allele maintained through natural selection?
Individuals with two recessive alleles have very high rates of reproduction.
Is sickle cell anemia and cystic fibrosis caused by recessive alleles?
im not really sure, but i think it is.
How is the sickle cell maintained through natural selection?
Heterozygous individuals pass the dominant and recessive alleles to offspring.
How is the sickle allele maintained through natural selection?
Heterozygous individuals pass the dominant and recessive alleles to offspring.
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.
How is the sickle-celled allele maintained through natural selection?
Individuals with two recessive alleles have very high rates of reproduction.
Is sickle cell anemia recessive or dominant?
Sickle cell anemia is an autosomal recessive disease. Carriers have sickle cell trait, which confers resistance to malaria.
How does a person with sickle-cell allele differ from a person with two sickle-cell alleles?
If a person has a single sickle cell allele they will have some sickles red blood cells, and some normal red blood cells. This is the origami purpose that this evolved for. If a person had a single sickle cell allele, they will be mostly resistant to malaria. This is why sickle cell anemia is most prevalent in areas of the world where malaria is common. However, if a person has two sickle cell anemia alleles, they will have ONLY sickled red blood cells. The "sickling" of the red blood cells is caused by a mutation in the protien that the gene codes for. That protein is hemoglobin, which carries oxygen through the blood. If a person has sickle cell anemia, parts of their body wil not get enough oxygen. They can pass out, loose sensation in the limb, or even die from it. In short, a person with two alleles is sick, and a person with one allele is not.
Is sickle cell an dominant or recessive?
Sickle cell anemia is an autosomal recessive disorder. It can result from two carriers having a child together.
Is a sickle is a dominant or recessive?
domaint
Is there any evidence that the traits shared by most of the population is not controlled by a dominant allele explain?
If the allele is beneficial then recessive alleles will drive to fixation in the population. Sickle cell trait is a fair example of this.
