Biology, 03.01.2020 19:31 offensiveneedle
Suppose you are trying to identify an unknown bacterial species. you perform a gram stain and the slide is a blue/purple color when you are finished. are the bacteria gram-positive or gram-negative?
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Biology, 22.06.2019 03:50
Explain how the political influence of african americans leaders became weaker.
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Biology, 22.06.2019 13:00
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 13:50
The largest unit within which gene flow can readily occur is a
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Biology, 23.06.2019 01:30
Across between one homozygous dominate individual and one homozygous recessive individual results in a individual
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Suppose you are trying to identify an unknown bacterial species. you perform a gram stain and the sl...
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