Which one or more of the following is prediction or assumption of the handicap principle for the evolution of sexual signals?

I- Females prefer costly signals

II- Costly signals are reliable indicators of signaller quality

III- Honest signals are costly to produce.

IV- Males displaying costly signals are not chosen by females

#Question id: 4988

#Unit 9. Evolution & Diversity of Life Forms

If the foods preferred by each species are found on different parts of the island, and if the flies mate and lay eggs on their food sources, regardless of the location of the food sources, then the speciation events involving these fly species may have been driven, at least in part, by which of the following?

#Question id: 4989

#Unit 9. Evolution & Diversity of Life Forms

If the malesʹ halteres have species-specific size, shape, color, and use in courtship displays, and if the speciesʹ ranges overlap, then the speciation events may have been driven, at least in part, by which of the following?

#Question id: 4990

#Unit 9. Evolution & Diversity of Life Forms

Fly species W, found in a certain part of the island, produces fertile offspring with species Y. Species W does not produce fertile offspring with species X or Z. If no other species can hybridize, then species W and Y

#Question id: 4991

#Unit 9. Evolution & Diversity of Life Forms

Which of these fly organs, as they exist in current fly populations, best fits the description of an exaptation?

#Question id: 4992

#Unit 9. Evolution & Diversity of Life Forms

The existence of the phenomenon of exaptation is most closely associated with which of the following reasons that natural selection cannot fashion perfect organisms?

#Question id: 4993

#Unit 9. Evolution & Diversity of Life Forms

If the prokaryotic flagellum developed from assemblages of proteins that originally were not involved with cell motility but with some other function instead, then the modern prokaryotic flagellum is a(n)