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Analyze the DNA strands below to determine what amino acid is changed and what type of mutation occurred. Normal hemoglobin DNA: TAC GTG GAC TGA GGA CTC ATT Normal hemoglobin mRNA: AUG CAC CUG ACU CCU GAG UAA Normal hemoglobin polypeptide: ?

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Normal Hemoglobin mRNA:

The specific base sequence for these amino acids is: GTG/CAC/CTG/ACT/CCT/GAG. Sickle cell hemoglobin (Hemoglobin S) results when, glutamic acid that is normally present in the sixth position on the beta globin chain is substituted with valine.

Normal hemoglobin Amino Acid:

The specific base sequence for these amino acids is: GTG/CAC/CTG/ACT/CCT/GAG. Sickle cell hemoglobin (Hemoglobin S) results when, glutamic acid that is normally present in the sixth position on the beta globin chain is substituted with valine

Sickle cell hemoglobin mRNA:

The mutation that causes sickle cell disease is the substitution of an A for a T in the hemoglobin gene. A CTT sequence in the gene normally codes for GAA in its messenger RNA. GAA in the messenger RNA specifies the amino acid glutamic acid at a particular position in normal hemoglobin.moglobin mRNA: The specific base sequence for these amino acids is: GTG/CAC/CTG/ACT/CCT/GAG. Sickle cell hemoglobin

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