26) Three populations of crickets look very similar, but the males have courtshi

Question

26) Three populations of crickets look very similar, but the males have courtship songs that sound differen function would this difference in song likely serve if the populations came in contact? 26) A) a behavioral reproductive isolating mechanism B) a temporal reproductive isolating mechanism C) a gametic reproductive isolating mechanism D) a postzygotic isolating mechanism The peppered moth provides a well-known example of natural selection. The light-colored form of the redominant in England before the Industrial Revolution. In the mid-19th century, a dark-colored form ap difference is produced by a dominant allele of one gene. By about 1900, approximately 90% of the moths industrial areas were dark colored, whereas light-colored moths were still abundant elsewhere. Apparentl readily find the light moths against the soot-darkened background in industrial areas and, therefore, were light moths. Recently, use of cleaner fuels has greatly reduced soot in the landscape, and the dark-coloredi been disappearing. Should the two forms of moths be considered separate species? A) No; they still can interbreed. B) Yes; they have completely different coloration. C) Yes; they are reproductively isolated based on habitat. D Yes; natural selection has affected the frequency of the two different forms . 8 Two species of frogs belonging to the same genus occasionally mate, but the embryos stop developing then die. These two frog species separate by A) reduced hybrid viability B)reduced hybrid fertility C) hybrid breakdownD) gametic isolation

Explanation / Answer

Answer:

26. Option A

a behavioral reproductive isolating mechanism

Reproductive isolation is a collection of evolutionary mechanisms

Mechanisms of Reproductive isolation are temporal isolation, behavioral isolation, ecological isolation

27) Option A

No, they still can interbreed

28) Option A

reduced hybrid viability

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