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 American Marketing Association (AMA) is a professional association for marketing professionals with 30,000 members as of 2012.It has 76 professional chapters and 250 collegiate chapters across the United States.he American Marketing Association has a board of directors and a set of councils with positions that are elected annually by its members.