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What sort of variations did you see within the classes of Cnidaria?
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The gene that causes sickle-cell disease is present in a higher percentage of residents of sub-saharan africa than among those of african descent living in the united states. even though this gene causes sickle-cell disease, it also provides some protection from malaria, a serious disease that is widespread in sub-saharan africa but absent in the united states. discuss an evolutionary process that could account for the different percentages of the sickle-cell gene among residents of the two regions.
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Does masterbation affect height growth or loss of growth hormone?
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Biology, 22.06.2019 03:00
Which of the following statements about archaea and bacteria is true? a. neither is single-celled. b. they both have nuclear membranes. c. neither reproduces by binary fission. d. they both lack a nuclear membrane.
Answers: 1
What sort of variations did you see within the classes of Cnidaria?...
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