What factors contribute to divergence between Hawthorn flies and Apple flies?

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This difference is due to a change in ploidy, resulting in a genetically differentiated population on nonnative hosts.

The ability to detect odors is phenotypically plastic; the changes seen are not genetic and do not reflect genetic differentiation.

A small population of Hawthorn flies colonized the nonnative hosts; the differentiation is due to genetic drift.

The nonnative host species have smaller fruits; natural selection favors flies that breed on the same plant type on which they are born.

 

asked Dec 28, 2012 in Biology by anonymous
    

1 Answer

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The nonnative host species have smaller fruits; natural selection favors flies that breed on the same plant type on which they are born.

 

answered Dec 28, 2012 by anonymous



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