Answers: 1
Biology, 22.06.2019 07:30, Cooldude3966
In which of the following relationships is one organism always benefited while the other organism is always harmed
Answers: 1
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?
Answers: 1
Biology, 22.06.2019 16:00, faithyholcomb
Darwin’s hypothesis about how life changes over time is now called?
Answers: 2
White blood cells produce what substances that destroy pathogens in the body...
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