what does this picture indicate? what is difference bewteen A, B, and C ?
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- Sickle-cell anemia is an interesting genetic disease. Normal homozygous individials (SS) have normal blood cells that are easily infected with the malarial parasite. Thus, many of these individuals become very ill from the parasite and many die. Individuals homozygous for the sickle-cell trait (ss) have red blood cells that readily collapse when deoxygenated. Although malaria cannot grow in these red blood cells, individuals often die because of this genetic defect causes deformation of red blood cells. However, individuals with the heterozygous condition (Ss) have some sickling of red blood cells, but generally not enough to cause mortality. In addition, malaria cannot survive well within these "partially defective" red blood cells. Thus, heterozygotes tend to survive better than either of the homozygous conditions. Assuming HWE, if 9% of an African population is born with a severe form of sickle-cell anemia (ss), what percentage of the population will be more resistant to malaria…There is a benign congenital condition called Hereditary Persistence of Fetal Hemoglobin (HPFH) in which production of the fetal hemoglobin (HbF) is not switched off post-partum (after birth). It is due to a mutation in the β-globin gene cluster. People that are homozygotes for this mutation, meaning that the gene from both parents is mutated, continue to make almost exclusively HbF throughout their life rather than adult hemoglobin (HbA). HPFH homozygotes demonstrate a slight erythrocytosis, or an increase in the number or mass of their red blood cells, and consequently an increase in the concentration of HbF. Given only what you know about the oxygen saturation dynamics of HbF versus HbA, can you explain why there might be the slight erythrocytosis in HPFH homozygotes? It has been observed that the prevalence of HPFH is much higher in populations with certain hemoglobinopathic disorders such as sickle cell anemia, and is selected for in populations with a high prevalence of these…It is not an easy matter to assign particular func-tions to specific components of the basal lamina, sincethe overall structure is a complicated composite materialwith both mechanical and signaling properties. Nidogen,for example, cross-links two central components of thebasal lamina by binding to the laminin γ-1 chain and totype IV collagen. Given such a key role, it was surprisingthat mice with a homozygous knockout of the gene fornidogen-1 were entirely healthy, with no abnormal phe-notype. Similarly, mice homozygous for a knockout of thegene for nidogen-2 also appeared completely normal. Bycontrast, mice that were homozygous for a defined muta-tion in the gene for laminin γ-1, which eliminated just thebinding site for nidogen, died at birth with severe defectsin lung and kidney formation. The mutant portion of thelaminin γ-1 chain is thought to have no other functionthan to bind nidogen, and does not affect laminin struc-ture or its ability to assemble into the basal lamina.…
- Sickle-cell anemia is an interesting genetic disease. Normal homozygous individials (SS) have normal blood cells that are easily infected with the malarial parasite. Thus, many of these individuals become very ill from the parasite and many die. Individuals homozygous for the sickle-cell trait (ss) have red blood cells that readily collapse when deoxygenated. Although malaria cannot grow in these red blood cells, individuals often die because of the genetic defect. However, individuals with the heterozygous condition (Ss) have some sickling of red blood cells, but generally not enough to cause mortality. In addition, malaria cannot survive well within these "partially defective" red blood cells. Thus, heterozygotes tend to survive better than either of the homozygous conditions. 11% of an African population is born with a severe form of sickle-cell anemia (ss), What is the frequency of the recessive allele? Please show your work in orderSickle-cell anemia is an interesting genetic disease. Normal homozygous individials (SS) have normal blood cells that are easily infected with the malarial parasite. Thus, many of these individuals become very ill from the parasite and many die. Individuals homozygous for the sickle-cell trait (ss) have red blood cells that readily collapse when deoxygenated. Although malaria cannot grow in these red blood cells, individuals often die because of the genetic defect. However, individuals with the heterozygous condition (Ss) have some sickling of red blood cells, but generally not enough to cause mortality. In addition, malaria cannot survive well within these "partially defective" red blood cells. Thus, heterozygotes tend to survive better than either of the homozygous conditions. 11% of an African population is born with a severe form of sickle-cell anemia (ss), What is the frequency of the dominant allele? Please show your work in order to receive credit.Sickle-cell anemia is an interesting genetic disease. Normal homozygous individials (SS) have normal blood cells that are easily infected with the malarial parasite. Thus, many of these individuals become very ill from the parasite and many die. Individuals homozygous for the sickle-cell trait (ss) have red blood cells that readily collapse when deoxygenated. Although malaria cannot grow in these red blood cells, individuals often die because of the genetic defect. However, individuals with the heterozygous condition (Ss) have some sickling of red blood cells, but generally not enough to cause mortality. In addition, malaria cannot survive well within these "partially defective" red blood cells. Thus, heterozygotes tend to survive better than either of the homozygous conditions. 11% of an African population is born with a severe form of sickle-cell anemia (ss), What percentage of the population will be more resistant to malaria because they are heterozygous (Ss) for the sickle-cell…
- Infection with SARS-CoV-2 can result in a wide range, and severity, of symptoms. Researchsuggests that some of this variation arises from the genetic variations between humans. Forexample, individuals with mutations in their interferon genes have a more severe response toSARS-CoV-2. Describe two general types of mutations that may occur in DNA, and how thesemutations might affect production of interferon-gamma. (Please note that I am looking for generaltypes of mutations, not specific nucleotide changes.)Suggest probable consequences of the following real or possible hemoglobinmutations. [Note: as shown](a) At β146 (HC3) His → Asp(b) At β92 (F8) His → LeuIn each case, indicate whether a single-nucleotide change is sufficient forthe mutation.Using the substrate Ac-Ser-Gln-Asn-Tyr*Pro-Val-Val-NH2 and 10 nM HIV-1 protease, an inhibitor showed competitive inhibition, and a family of lines of 1/v vs. 1/[substrate] at changing-fixed concentrations of this inhibitor were as below: Slope (apparent Km/Vmax) (sec): 17,241 21,072 24,904 28,735 32,567 [Inhibitor] (M): 0 10 20 30 40 The Ki value for this inhibitor is _________________
- Proposed mechanism of class switching induced by interleukin 4Supernumerary fusion cells (FCs) form in the dorsal trunk (DT) in aopO199 embryonic trachea. How could you test whether the extra FCs are from FCs dividing, or from a change in the fate of other tracheal cells? What other possible cellular mechanism could be taking place here?A human gene called theCFTR gene (for cystic fibrosis transmembrane regulator) encodes aprotein that functions in the transport of chloride ions across the cellmembrane. Most people have two copies of a functional CFTR geneand do not have cystic fibrosis. However, a mutant version of the CFTRgene is found in some people. If a person has two mutant copies ofthe gene, he or she develops the disease known as cystic fibrosis. Arethe following descriptions of this disease related to genetics at themolecular, cellular, organism, or population level?A. People with cystic fibrosis have lung problems due to a buildupof thick mucus in their lungs.B. The mutant CFTR gene encodes a defective chloride transporter.C. A defect in the chloride transporter causes a salt imbalance inlung cells.D. Scientists have wondered why the mutant CFTR gene is relativelycommon. In fact, it is the most common mutant gene that causesa severe disease in persons of Northern European descent. Onepossible explanation why…