Question

learn with an example
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. tryon’s 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?

genetics researchers

biology students

professional psychologists

people who own pet rats

Explanation:

The excerpt is from a science textbook, presenting a study on genes and behavior in rats. Biology students are the primary audience as textbook excerpts like this are typically designed to educate students studying biology (covering topics like genetics and behavior in organisms). Genetics researchers would likely use more specialized literature, professional psychologists focus on human or clinical psychology more, and pet rat owners don't need textbook - level scientific explanations of such experiments.

Answer:

biology students