In the following scenarios, which type of speciation are you observing? Identify each of the following as examples of ei

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In The Following Scenarios Which Type Of Speciation Are You Observing Identify Each Of The Following As Examples Of Ei 1 (105.86 KiB) Viewed 77 times

In the following scenarios, which type of speciation are you observing? Identify each of the following as examples of either: A) allopatric speciation B) peripatric speciation C) parapatric speciation D) sympatric speciation 22. A species of squirrel exists near a river. The river starts out small and the squirrel species occupies both sides of the river. Over a million years, the river carves out a great valley that isolates the squirrels on either side of the valley. The squirrels on either side can no longer mate with one another. 23. One species of insect is partial to oak leaves while a mutant of this develops the taste for maple. The forest is a mixture of oak and maple. Over time, the insects that live on oaks and those that live on maples differentiate because, although their ranges overlap, they spend rather little time together on the same plant and do not mate. Eventually they speciate. 24. A species of iris lives next to a marsh. A genetic variant arises that is better at surviving in the wet soil in the marsh. Both variants (dry soil and marshy soil types) co-exist next to one another and continue exchanging genes across this ecotone, forming a hybrid zone. The hybrids are less fit than either pure variety. Over centuries, the hybrids develop isolating mechanisms to reduce the amount of gene exchange with the other variety. Eventually they speciate.