#Question id: 4981
#XL - S Microbiology
An organism has a relatively large number of Hox genes in its genome. Which of the following is not true of this organism?
#Question id: 4984
#XL - S Microbiology
A hypothetical mutation in a squirrel population produces organisms with eight legs rather than four. Further, these mutant squirrels survive, successfully invade new habitats, and eventually give rise to a new species. The initial event, giving rise to extra legs, would be a good example of
#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