The Mexican spotted owl and the Northern spotted owl used to be the same species. They were separated by a river and adapted over time to best suit their different geographical locations with distinct climates and ecosystems. Over time, they differed so much from each other that they could not breed anymore and are considered two different species. What is this an example of? Group of answer choices   Allopatric speciation Stabilizing selection Sympatric speciation Bottleneck effect Directional selection

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Mitochondrial Mutations

A mitochondrion is a cellular organelle that serves as the site for cellular respiration and energy production (ATP or Adenosine Triphosphate). It is a double-membrane-bound organelle and is only present in eukaryotic cells.