A new species is discovered in which males care for offspring after birth, and females leave the nest immediately. In this species, males are likely to   a. be promiscuous.   b. have lower parental investment.   c. have fewer offspring overall than females.   d. have more offspring overall than females.

Which of these situations offers the lowest “opportunity for selection” for males? A. Females choose mates with a fancy ornament. B. Every female chooses one male to mate with for life. C. Locations that females need access to in order to reproduce are rare. D. Males fight each other for access to groups of females.

The main difficulties encountered when anesthetizing rodents and putting their lives at risk are: There may be more than one answer. c.Inexperience in performing the physical examination of this species. d.Difficulties in providing supportive care. a.Little familiarity with the rodent species. b. Lack of knowledge of the use of medical and/or surgical equipment.

Parasites are often microscopic in size but have large negative effects on their hosts. If this is true for the parasites of songbirds, what predictions follow about their effects on male song performance, and how should females respond to the song of infected males as opposed to uninfected individuals (Garamszegi 2005)? (Don't use any online source)