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SOLVED:Sickle-cell disease is caused by a so-called point mutation in the human β-globin gene. A point mutation is the result of a single base substitution in the DNA encoding a gene. The sickle-cell mutation results in the substitution of Val for Glu at position 6 in the β-globin protein. (a) Using the information in Figure 5.17, explain how a point mutation could change a codon for Glu to a codon for Val. (b) Do you expect the pI for the sickle-cell β-globin to be higher or lower than the pI f
2023年1月2日
numerade.com
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SOLVED: A researcher was studying red blood cells from a patient homozygous for the sickle cell mutation in the β-globin gene (βE6V). She found that increasing the concentration of one of the following chemicals decreased the frequency of sickling by these cells. What chemical is this most likely to be?A. 2,3-Bisphosphoglycerate (BPG)B. Fe2 C. glucoseD. histidineE. O2And explain why the other answers are incorrect. Thank you
8 个月之前
numerade.com
what fragments would be present following ddel digestion of a sample from someone with a heterozygous beta globin genotype 12337
2021年10月22日
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In mice, the autosomal locus coding for the β-globin chain of hemoglobin is 1 m . u. from the albino locus. Assume for the moment that the same is true in humans. The disease sickle-cell anemia is the result of homozygosity for a particular mutation in the β-globin gene. a. A son is born to an albino man and a woman with sickle-cell anemia. What kinds of gametes will the son form, and in what proportions? b. A daughter is born to a normal man and a woman who has both albinism and sickle-cell an
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