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What types of hemoglobinopathies are there?
In general, hemoglobinopathies are divided into those in which the gene abnormality results in a qualitative change in the hemoglobin molecule and those in which the change is quantitative.
What is the DNA code for normal hemoglobin?
The DNA code for normal hemoglobin is the gene that encodes for the production of the protein hemoglobin. The sequence of this gene includes instructions for building the alpha and beta globin chains that make up the hemoglobin protein. This gene is located on chromosome 11 in humans.
Which of the following is the first step in gene therapy?
Identifying the faulty Gene. Identifying the faulty Gene that causes the disease.
What happens to the instructions when the genes are changed or mutated Provide an example of hemoglobin gene mutation?
If our hemoglobin gene is normal, the hemoglobin protein works fine. But if the instuctions in that gene are changed, or "mutated,"changes in the hemoglobin protein could result. One such mutation causes a disorder called sickle cell anemia.
What type of molecule is not functioning in the usual manner when a person has sickle cell?
The molecule affected in sickle cell disease is hemoglobin, specifically the beta-globin protein component. A mutation in the beta-globin gene causes the hemoglobin molecule to form abnormal structures, leading to the characteristic sickle shape of red blood cells. This abnormal hemoglobin can cause red blood cells to become rigid and stick together, leading to various complications.
What chemical found in a gene is changed by mutation?
The chemical found in a gene that is changed by mutation is the sequence of nucleotides comprising the genetic code. Mutations can alter this sequence by substituting, inserting, or deleting nucleotides, which can lead to changes in the resulting protein or RNA molecule.
What is the name of the condition of one sickle cell gene and one normal hemoglobin gene?
The condition is called sickle cell trait. This occurs when an individual inherits one sickle cell gene and one normal hemoglobin gene, resulting in milder symptoms compared to sickle cell disease.
What is a DNA molecule called?
A gene
How are the scientists in the Field in genetics trying to help people with genetic disorders?
They can cure inherited genetic diseases by taking the faulty gene out of the person's DNA, and replacing the faulty gene with a healthy gene. This way the person is not only cured from the disease, but any future generations in that person's family won't be affected either, because the faulty gene will have been removed altogether.
Is Huntington's Disease a gene mutation?
No, it's caused by a single point mutation of a gene.
How does sickel hemoglobin differ from normal hemoglobin?
6th amino acid is changed in haemoglobin chain due to a recessive mutation on beta haemoglobin producing gene
Why do only half of a carrier's gametes contain faulty cf gene?
only half of the carrier's gametes contain the cystic fibrosis gene because they only inherit one gene from either the mother or father, not both. For someone to have cystic fibrosis they must have inherited a faulty gene from each parent.
