Mr. grayson demonstrated an experiment at the beginning of class. then each student worked in pairs to carry out the
experiment and collect data.
which term best describes what took place during the class?
o
repetition
replication
accuracy
precision

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?

Produce proteins by following coded instructions that come from the nucleus of the cell.

How many autosomes are in this human karyotype? how many sex chromosomes?