Biology, 28.09.2019 07:30 brianna4455
How does continental drift and the theory of plate tectonics relate to pangea
Answers: 1
Biology, 22.06.2019 03:30
What organelle other than the nucleus houses dna in a eukaryotic cell?
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Biology, 22.06.2019 06:00
Explain why ecosystem diversity results in species diversity in a healthy biosphere
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Biology, 22.06.2019 12:30
Is becoming less expensive to screen blood samples for dna certain diseases have genetic basis what is possible ethical concern about the availability of inexpensive dna testing
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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?
Answers: 1
How does continental drift and the theory of plate tectonics relate to pangea...
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