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Biology, 22.06.2019 10:30
All ova contain sex chromosomes corresponding to: x y xx xy
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Biology, 22.06.2019 12:00
What type of graph presents information about how often certain or traits occur?
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Biology, 22.06.2019 12:30
Which anatomical plane is the only one that could not show both the sternal region and vertebral region
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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
What polysaccharide is found in skeletal muscle and liver cells?...
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