Biology, 28.01.2020 23:04 LeoValdez5782
Suppose that in a population of 250,000 mice the mutation rate per base pair for a genetic locus is 4 × 10–8. the locus contains 1,500 base pairs. how many new mutations should we expect at this locus in each generation?
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What part of the brain is highlighted in the diagram below?
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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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