Which of the following is expected to have the smallest medial preoptic area (MPOA) volume in California rats?
A) Mother rat
B) Virgin male rat
C) Nulliparous female rat
D) Father rat

Question

Quizplus · Accepted Answer

The medial preoptic area (MPOA) is associated with parental behavior. In California rats, which are biparental, both mothers and fathers have larger MPOA volumes due to their active role in parenting. Virgin males may have a larger MPOA than nulliparous females due to potential mating behaviors, but nulliparous females, having no reproductive or parental experience, are expected to have the smallest MPOA volume.

Which of the Following Is Expected to Have the Smallest