Biology, 06.07.2019 09:10 Nerdyprincesd8689
Why do we not have many fossil records from the precambrian era?
Answers: 2
Biology, 22.06.2019 00:30
One gene can influence trait(s). one trait can be determined by gene(s).
Answers: 1
Biology, 22.06.2019 01:00
Which part of cellular respiration must occur before any of the other steps can occur
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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
Why do we not have many fossil records from the precambrian era?...
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