In studies of how traits are inherited, what makes certain species candidates for model organisms?
a. They are the first organisms to be used in a particular type of experiment, so they are a historical “model” of what researchers expect to find.
b. They are easy to study because a great deal is already known about them.
c. They are the best or most fit of their type.
d. They are easy to maintain, have a short life cycle, produce many offspring, and yield data that are relevant to many other organisms.