Usually Jim or Jimmy is short for James
Because that is what god wanted it to be.... :3
"your name is" is correct English and when used in this way means both your full name or a part of your name (usually surname, depending on the context). "your names are" is also correct English, but...
Luekemia was named by John H. Benett in 1845 based on it's effects on the human body.
It is the name of its genus.