function in. 1  chromosomal disorders (in chromosomal disorder) 2  crop production (in Poaceae: Economic and ecological importance) 3  fern evolution (in fern: Chromosome numbers and polyploidy) 4  speciation (in evolution: Polyploidy)
The American Medical Association (AMA), founded in 1847 and incorporated in 1897, is the largest association of physiciansâboth MDs and DOs âand medical students in the United States.
Throughout its history, the AMA has been actively involved in a variety of medical policy issues, from Medicare and HMOs to public health, and climate change. Between 1998 and 2011, the AMA spent $264 million on lobbyists, second only to the American Chamber of Commerce.