When apples were introduced to north america some individuals of a species of maggots that fed on hawthorns began to grow in apples. over time a species that fed exclusively on apples emerged and became separate from the species that fed on hawthorns. this type of speciation is called a) sympatric speciation. b) allopatric speciation. c) parapetric speciation. d) peripatric speciation.

when apples were introduced to north america some individuals of a species of maggots that fed on hawthorns began to grow in apples. over time a species that fed exclusively on apples emerged and became separate from the species that fed on hawthorns. this type of speciation is called c) parapetric speciation. the image shows how the ranges of the two species slowly change over time and lead to speciation. the species change their lifestyles in response to the gradient. this affects the gene flow and leads to speciation.

"a.) well–developed vascular system."