Biology, 17.07.2019 22:40 DoyleAK108
Is it possible to find the keratin gene in two different kinds of organisms but not find the protein that is produced from that gene?
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Biology, 22.06.2019 02:00
What is the difference between an igneous, sedimentary and metamorphic rock
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Biology, 22.06.2019 02:00
2. given that most biochemical (other than coal) rocks react with hydrochloric acid, what does that tell you about organisms?
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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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Is it possible to find the keratin gene in two different kinds of organisms but not find the protein...
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