Question

read the science textbook excerpt and then answer the question.
genes and behavior
in the 1940s, behavioral psychologist robert tryon conducted an experiment in which rats were placed in a complex maze that had a food reward at one exit. rats that made fewer errors navigating the maze were bred together to create a \maze - bright colony.\ rats that made more errors were bred together to create a \maze - dull colony.\ after selectively breeding the mice for seven generations, tryon tested offspring from each colony to determine how quickly those rats would learn the maze. offspring of the maze - bright rats consistently made fewer errors than the maze - dull offspring. tyrons research therefore suggests that the ability to navigate the maze successfully was influenced by genes passed from parent to offspring.
who is the primary audience?
people who own pet rats
professional psychologists
biology students
genetics researchers

Explanation:

The text is from a science textbook excerpt. It presents a scientific experiment in a straightforward manner, likely aiming to educate students. Biology students are a common audience for such textbook - based scientific explanations. It is not overly technical for professional psychologists or genetics researchers (who might expect more in - depth analysis), and it has no relevance to pet rat owners.

Answer:

biology students