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Heterozygous persons with one sickle cell allele and one normal allele also show resistance to?
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∙ 13y ago
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Is it true that people who are heterozygous recessive allele but who have a normal phenotype eill not pass the harmful recessive allele to their kids?
It depends on the genotype of the childs other parent. If your partner is heterozygous as well then there is a 25% chance your child will be homozygous recessive. If they are homozygous dominant then none of your children will have the phenotype of the recessive trait. They will just possibly be carriers of the recessive allele.
What involves placing a normal allele in a cell that has a mutation and hoping that the normal allele begins to function.?
Gene therapy
What are the possible phenotypes of the offspring between a parent who is a heterozygous carrier for cystic fibrosis and a homozygous normal parent?
The chances are one half. You will most likley have 2 children without the gene, and 2 with one gene. Since the normal parent has the dominate allele, the Cystic Fiborisis will not be present.
A person can be tested for the allele that causes Tay-Sachs disease because the what of that allele is different from that of the normal allele?
DNA sequencing
A mother has one allele for color blindness and one allele for normal vision. What is the probability that her gamete will have the allele for color blindnessg?
50% (apex)
Will a heterozygous female with hemophilia have blood that will clot normally?
Yes, because Hemophilia is recessive (if you have a normal allele, you won't have hemophilia, and heterozygous means that you have one normal and one abnormal allele).
Is it true that people who are heterozygous recessive allele but who have a normal phenotype eill not pass the harmful recessive allele to their kids?
It depends on the genotype of the childs other parent. If your partner is heterozygous as well then there is a 25% chance your child will be homozygous recessive. If they are homozygous dominant then none of your children will have the phenotype of the recessive trait. They will just possibly be carriers of the recessive allele.
1 in drosophila the allele for normal length wings is dominant over the allele for vestigial wings In populations of 1000 individuals 360 show the recessive phenotype How many individuals would you?
160 homozygous dominant individuals and 480 heterozygous individuals
Do all frame overo horses carry one lethal gene?
The Overo allele is only lethal when the foal inherits a copy from both parents. A heterozygous foal is a normal frame overo.
Can give example about overdominance?
Overdominance is when the heterozygote has an advantage over both the recessive and dominant homozygotes. Sickle cell disease is an example of this. When the individual is homozygous for the sickle cell allele, sickle cell disease is shown. When the the individual is homozygous for the wildtype allele, they appear normal. However, when the individual is heterozygous, he or she appears normal and will also be resistent to malaria.
A mother has one allele for color blindness and one allele for nomal vision what is the probability that her gamete will have the allele for color blindness?
Color Blindness is x-linked recessive. Therefore, it could not be heterozygous; the daughter would not be colorblind, but rather have normal vision.
What allele for the sickle cell trait is with the normal allele?
codominant
What is the allele for sickle cell trait with the normal allele?
codominant
A codominant disorder that causes the formation of crescent shaped red blood cells?
Sickle cell disorder is the heterozygous expression of the sickle cell allele acting in conjunction with a normal allele. Some red blood cells will be normal and others will be deformed. Affected red blood cells can look/act in a fairly normal fashion under some circumstances. High altitudes can increase cell deformity for example.
The allele for the sickle cell trait is what with the normal allele?
codominant
What is the genotype of two normal parents who have a child with cystic fibrosis?
The genotype would have to be homozygous recessive if the child was completely effected by the disease. The "normal" paretns would have to have heterozygous recessive genotypes. This makes sense since the allele that causes sickle cell shows incomplete dominance when present with a normal allele in a pair. The "normal" parents actually would have a mixture of sickle cell shaped red blood cells combined with normal shaped ones. The carrier parents does not display symptoms of the disease since the regular red blood cells alone can fill the body's need for oxygen under normal circumstances. The only time the cArrier would notice would be under times of extreme oxygen demand, such as a sprint.
What involves placing a normal allele in a cell that has a mutation and hoping that a normal allele begins to function?
Gene therapy
