Which of the following correctly lists the cells in order from simplest structure to most complex structure?
a. eukaryotes, prokaryotes, viruses
b. prokaryotes, viruses, eukaryotes
c. viruses, prokaryotes, eukaryotes
d. viruses, eukaryotes, prokaryotes

What are the types of mutations, and how does each alter the encoded protein? college level answer

Twind is considered to be an abiotic factor because it.?

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?