Alpha is often used to refer to the dominant group, while Beta refers to the subordinate group, the designation coming from the first two letters of the Greek alphabet. This most often occurs, I believe, when talking about the sociability of animals. For example, my sister has an alpha-male dog that is not good around strangers, as he feels the need to assert his authority.
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rpshThis remind the me a phrase that something like "from Alpha to Omega". Do you know the phrase? It seems to mean from begining to ending maybe.That is exactly what it means. I think the most famous reference is in the New Testament of the Bible.