#Question id: 4985
#XL - S Microbiology
The loss of ventral spines by modern freshwater sticklebacks is due to natural selection operating on the phenotypic affects of Pitx1 gene
#Question id: 4988
#XL - S Microbiology
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
#XL - S Microbiology
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
#XL - S Microbiology
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
#XL - S Microbiology
Which of these fly organs, as they exist in current fly populations, best fits the description of an exaptation?
#Question id: 4992
#XL - S Microbiology
The existence of the phenomenon of exaptation is most closely associated with which of the following reasons that natural selection cannot fashion perfect organisms?