Gene Flow Is Completely Blocked Between Two Populations of a Flowering

question 70

Essay

Gene flow is completely blocked between two populations of a flowering plant for 300 years.One population develops light green leaves,tall spindly stems,and purple flowers.The other population develops dark green leaves,short stems,and white flowers.At the end of the 300 years,people begin planting these flowering plants together in decorative gardens.People quickly realize that these two flowering plants are capable of interbreeding.Did speciation occur during the 300-year separation? Explain your reasoning.

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