BIOL X /d2l/le/content/157473/viewContent/1681261/View eld of Hope BBF. Skinner

Question

BIOL X /d2l/le/content/157473/viewContent/1681261/View eld of Hope BBF. Skinner . Psycho BF Skinner loperan Use the following information to answer the next 2 questions: One of the examples of adaptive radiation that is continuously st is that of the cichlid fishes in Lake Victoria (East Africa). There are hundreds of species of cichlids in this relatively young lake (300,000 udied years old) and they have some interesting dietary differences: some eat algae, some plants, some mollusks, some zooplankton, some other cichlid eggs, some cichlid babies, some fish scales. This diversity of similar species in a single lake is considered an example of adaptive radiation. Currently researchers are investigating the similarities and differences among the genetic make-up of the species to see if this lends support to this hypothesis. [8] The observations of the cichlids does NOT support any hypothesis concerning coevolution because coevolution... a) does not involve natural selection. b) requires the founder effect c) requires evidence that the fish are naturally selecting the other species in the area. depending on the adaptations they need. d) requires evidence that as one species changes another changes in response

Explanation / Answer

The correct option is - (d)

Coevolution is the process of reciprocal evolutionary change, between pairs of species or among groups of species as they interact with one another. It is one of the primary methods by which biological communities are organized.

The faster prey select against individuals in the predatory species who are unable to keep pace. As a result only fast individuals or those with adaptations allowing them to capture prey using other means will pass their genes to the next generation.

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