Which Statement About the Impact of Testosterone on Brains of Adult

question 229

Multiple Choice

Which statement about the impact of testosterone on brains of adult songbirds is false?

• A) Increases in circulating testosterone in spring cause increases in the size of brain regions in adult males.
• B) Adult females injected with testosterone in spring sing their species-specific song.
• C) Under normal circumstances, adult females lack the hormonal stimulation to sing in spring.
• D) Increases in the size of brain regions due to rising levels of testosterone reflect increases in size and number of neurons.
• E) Females fail to form a memory of their species-specific song as nestlings.

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