What are two main functions of the female reproductive system in the order in which they occur in the female life cycle?
•pregnancy and oogenesis
•oogenesis and pregnancy
•spermatogenesis and impotence
•impotence and spermatogenesis

Where can you find prokaryotic and eukaryotic cells?

Were you able to observe the nucleolus in any of the cells if so which ones

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?