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Biology, 22.06.2019 13:00, mimivenga
Astudy by solloch and et. al., in 2017, gives the map above which shows the frequency of alleles with a ccr5-delta32 mutations over 87 different countries. this mutation deletes the presence of a co-receptor (ccr5) on the outside of human t-cells (lymphocytes). some viruses, such as the one responsible for the black death and human immunodeficiency virus (hiv), require this receptor for attachment to host cells during the infection process. the black death was an epidemic that passed over northern europe during the 14th century killing nearly 60% of europeans. according to this information, which explanation best explains why northern europeans show a greater immunity for hiv than some other parts of the world?
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Biology, 22.06.2019 14:20, Blahdjwj108
Which feature would you expect to find in a population in which sexual selection depends on male competition?
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Biology, 22.06.2019 19:00, Solany6426
Identify the area on the image where the force of attraction is the strongest.
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Biology, 22.06.2019 21:00, klairecarregal6016
What is the net atp production at this stage of cellular respiration? 2atp aatp 32 atp 36 atp
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