A race shares genes?

No, the classical racial traits occur in clines, that is, these traits have a range of variation. One example is skin color, which ranges from dark to light skin. Within each group you care to define there is a range of variation.You can get significant differences by comparing groups at great distances from one another, or groups from vastly differing climates.Likewise, you can see similarities by comparing groups in similar climates. Negritos in SE Asia share a number of traits with African pygmies (dark skin, short stature and hair form, for example), but the two groups are only very distantly related.In addition to the classical racial traits (skin color, hair and nasal form, stature and body form, etc.) you also have genetic traits. These include a wide range of things from blood types to fingerprint patterns to ear wax type. These were not used in classical racial schemes because early explorers couldn't examine those traits--they just used those they could see.And many of the classical traits relate more to climate than they do to descent.Bottom line is race is a human construct applied by different people for different reasons and using different criteria.

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Religious belief does not constitute scientific evidence, nor does it convey scientific knowledge.

On the gross level you are correct.But when you start to look at the details sometimes things are more complex. As I mentioned above the Negritos of SE Asia look remarkably like the Pygmies of Africa, but they are only very distantly related.And you get different answers if you select different numbers of races. If you prefer three, them Caucasoid, Mongoloid, and African seem to cover most folks.But where do you draw the lines if you want four races, or five, or a couple of dozen? And what traits do you use to separate the groups? Classical (visual) or genetic? Which is the most accurate? Do you want to separate groups by looks or by actual descent?

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Religious belief does not constitute scientific evidence, nor does it convey scientific knowledge.