The results of Berthold's famous study determined that
A) roosters need adrenal glands.
B) the testes produced a substance that supported male traits, including behavior.
C) the testes need a neural connection to support male traits, including behavior.
D) roosters mate with multiple hens.

Question

Quizplus · Accepted Answer

Berthold's study showed that the testes produce a substance (later identified as testosterone) that is responsible for the development and maintenance of male traits and behaviors in roosters, even without direct neural connections.

The Results of Berthold's Famous Study Determined That