What is the difference between eukaryotic and prokaryotic cells? Eukaryotic cells are found in bacteria and prokaryotic cells are not.

Prokaryotic cells are found in plants and animals and eukaryotic cells are not.

Eukaryotic cells contain organelles and DNA enclosed within a nucleus and prokaryotic cells do not.

Prokaryotic cells contain no organelles except DNA enclosed within a nucleus and eukaryotic cells do not.

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?