Answers: 2
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
Biology, 22.06.2019 14:00
The most famous fossil called archaeopteryx is which of the following? a dinosaur a fern a fish a bird
Answers: 2
Biology, 22.06.2019 17:30
What is the purpose of presenting a false dilemma in a speech?
Answers: 1
2. What factors will cause the size of a population to increase?...
Mathematics, 05.07.2019 14:10
Chemistry, 05.07.2019 14:10
Computers and Technology, 05.07.2019 14:10
History, 05.07.2019 14:10
Biology, 05.07.2019 14:10
English, 05.07.2019 14:10
Social Studies, 05.07.2019 14:10
Chemistry, 05.07.2019 14:10
Mathematics, 05.07.2019 14:10