Horizontal Transfer vs. Vertical Descent Gentamicin is an antibiotic that is used to treat bacterial infections. A hospital reports a sudden outbreak of a new gentamicin-
resistant strain of Escherichia coli in 5 out of 25 patients of the intensive care unit. On further investigation, it was determined
that this new strain was found only in patients that were also infected with a known gentamicin-resistant strain of Klebsiella
pneumoniae. What is the most likely explanation for the development of this new antibiotic resistant strain of Escherichia coll?

one characteristic that is shared by all is a soft body. many

of these invertebrate animals also have an outer shell to protect their

body. oysters, clams, snails, and mussels are all mollusks. so are octopuses, squids, and slugs. mollusks live on land and in freshwater.

they fuse to form they have half as many chromosomes as a somatic cell of the same individual. b

succession returns a disturbed

ecosystem to a more stable state. this is also classified into two (2) types:

primary succession and secondary succession. the primary succession arises when

a new land is transformed and a bare rock has been exposed providing an environment

that can be occupied for the first time. while, secondary succession occurs

when a previously occupied environment was disturbed that kills much of all its

community

explanation: