Rickettsias differ from chlamydias in that rickettsias a) are gram-negative. b) are intracellular parasites. c) require an arthropod for transmission. d) form elementary bodies. e) lack cell walls.

What is hydroelectric power produced by?

Prior to the development of dna fingerprinting, blood type could be used to determine possible parentage. although it might prove someone was not a parent, it could not show if someone was positively the parent, only that he or she might be a parent. which of the following is a true statement that can be made about parentage based on blood typing?

Actual age your first developed of age well comparison age refers to absolute age true or false