Read the science textbook excerpt and then answer the question.
Genes and Behaviour
In the 1940s, behavioural 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. Tyron’s research therefore suggests that the ability to navigate the maze successfully was influenced by genes passed from parent to offspring.
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