Refer to the figure The figure shows two species, a fire-bellied toad and yellow-bellied toad, which occupy different areas of Europe.A small area of overlap between these regions constitutes a hybrid zone.If individuals from the two populations overcome prezygotic reproductive barriers, additional postzygotic barriers may prevent the formation of stable hybrids.Identify two reasons why the hybrid zone between B.bombina and B.variegata is so narrow.What would likely happen if the hybrids became somewhat more fit?

Question

Refer to the figure  The figure shows two species, a fire-bellied toad and yellow-bellied toad, which occupy different areas of Europe.A small area of overlap between these regions constitutes a hybrid zone.If individuals from the two populations overcome prezygotic reproductive barriers, additional postzygotic barriers may prevent the formation of stable hybrids.Identify two reasons why the hybrid zone between B.bombina and B.variegata is so narrow.What would likely happen if the hybrids became somewhat more fit?

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The Answer of Refer to the figure  The figure shows two species, a fire-bellied toad and yellow-bellied toad, which occupy different areas of Europe.A small area of overlap between these regions constitutes a hybrid zone.If individuals from the two populations overcome prezygotic reproductive barriers, additional postzygotic barriers may prevent the formation of stable hybrids.Identify two reasons why the hybrid zone between B.bombina and B.variegata is so narrow.What would likely happen if the hybrids became somewhat more fit?

Refer to the Figure the Figure Shows Two Species