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.
The National League was formed in 1876. Because this was successful, the American Association was created in 1881 to compete with the NL. In order to attract fans, the AA instituted several policies that the NL lacked: they played games on Sundays and they sold beer at the ballpark.