The image displays the embryological development of five groups of vertebrates. Based on the evidence illustrated in the image, what
statement is most accurate about the relatedness of the five species?
es )
Mammals and birds share a more recent evolutionary ancestor because
they are both endothermic
Birds are most distantly related to the other groups because they are the
only group with feathers.
Fish and reptiles are the most closely related groups as they both contain
scales as an outer covering
D)
Birds and reptiles share the most recent common ancestor in evolution
because they share the most homologies during embryonic development.

You need to make 500ml of 7h9(+) media with 1x adn and 30ug/ml of the antibiotic kanamycin. your stock solutions are 10x adn and 30mg/ml of kanamycin. the solvent is distilled water. how much of each component will you need to make the desired final solution?

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?

Identify the structures ! 20 points