Sickle-cell anemia is a recessive autosomal disorder that is caused by an amino acid substitution in the β-hemoglobin protein. the dna mutation underlying this substitution is a snp that alters a gag codon for the amino acid glutamate to a gtg that codes a valine. the frequency of sickle-cell anemia among african americans is about 1/400. what is the frequency of this gtg codon in the β-hemoglobin gene among african americans?
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Biology, 21.06.2019 20:50
Next pretest: evolution select the correct answer in a laboratory population of flies, the female flies are gray and the males are yellowish gray. biologists observed that all the male flies had an equal chance for reproduction, but the male flies with the brightest colors were more likely to successfully reproduce. what phenomenon could explain such a change? a sexual selection b. disruptive selection c. stabilizing selection d. directional selection
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Biology, 21.06.2019 23:10
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Biology, 22.06.2019 08:00
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Answers: 1
Biology, 22.06.2019 10:00
What are the proteins in connectivity tissues of your foot examples of?
Answers: 2
Sickle-cell anemia is a recessive autosomal disorder that is caused by an amino acid substitution in...
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