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.
APTA History. Physical therapists formed their first professional association in 1921, called the American Women's Physical Therapeutic Association. Led by President Mary McMillan, an executive committee of elected officers governed the association, which included 274 charter members.