The fact that most of us have five lumbar vertebrae, but some people have six and some have four is an example of ____________ variation among | Cheap Nursing Papers

The fact that most of us have five lumbar vertebrae, but some people have six and some have four is an example of ____________ variation among

The fact that most of us have five lumbar vertebrae, but some people have six and some have four is an example of ____________ variation among organisms

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