These alternative drug therapies have been listed by various sources as possible alternative treatments for Huntington's Disease: 1  Pyridostigmine - used as part of a combination therapy. 2  Anaplex SR - used as part of a combination therapy. 3  Mestinon-SR - used as part of a combination therapy.  Mestinon Timespan - used as part of a combination therapy.
See these photographs of the Anna's Blue (Plebejus anna) . Another good way to tell the difference between male and female butterflies is by behavior. Males are often perching or patrolling in search of females, and females spend a lot time searching for plants on which to lay their eggs.
In birds and most reptiles, however, it is the opposite: XX individuals are male and XY individuals are female. In fruit flies (Drosophila), XX is female and XY is male, but the Y is inert and the sex is determined by whether there are two X chromosomes or only one. (Thus, XO is female in humans but male in Drosophila.