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A variety of sickle cell disorders result from inheritance of the sickle cell gene in a compound heterozygous manner with other mutant beta globin genes. These disorders include sickle cell-beta thalassemia. [7] In the case of sickle cell anemia, an individual with one allele for hemoglobin S and one allele for hemoglobin C would still develop ...
Carrier frequency of the intellectual disability is three times more than that of sickle cell disease and thalassemia among the Arab population with 25–60% consanguinity rates!. 33 genes (observed phenotype), were identified among the pre-screened multiplex consanguineous families with neurogenetic disorders.
Sickle cell nephropathy is a type of kidney disease associated with sickle cell disease which causes kidney complications as a result of sickling of red blood cells in the small blood vessels. The hypertonic and relatively hypoxic environment of the renal medulla , coupled with the slow blood flow in the vasa recta , favors sickling of red ...
The sickle cell trait provides a survival advantage against malaria fatality over people with normal hemoglobin in regions where malaria is endemic. The trait is known to cause significantly fewer deaths due to malaria, especially when Plasmodium falciparum is the causative organism.
At the time it was a scientific puzzle that the disease was prevalent even though it killed people before they reached puberty, before they can have children to pass on the lethal gene. [4] He found that the prevalence of sickle-cell trait (heterozygous condition) among people inhabiting coastal areas was higher than 20%. [8]
CRISPR-Cas9. CRISPR gene editing (CRISPR, pronounced / ˈ k r ɪ s p ə r / "crisper", refers to "clustered regularly interspaced short palindromic repeats") is a genetic engineering technique in molecular biology by which the genomes of living organisms may be modified.
A chromosome is a package of DNA with part or all of the genetic material of an organism.In most chromosomes, the very long thin DNA fibers are coated with nucleosome-forming packaging proteins; in eukaryotic cells the most important of these proteins are the histones.
West Africans (e.g., Mende of Sierra Leone), bearing the Senegal sickle cell haplotype, [111] [96] may have migrated into Mauritania (77% modern rate of occurrence) and Senegal (100%); they may also have migrated across the Sahara, into North Africa, and from North Africa, into Southern Europe, Turkey, and a region near northern Iraq and ...