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When every individual in a population carries an allele, that allele is said to be:

ANovel
BFixed
CLost
DRare
Answer & Solution
Correct answer: B. Fixed
1. Selection can spread an allele fully. 2. It becomes fixed. 3. Deleterious dominant alleles may be eliminated. _Source: OpenStax Biology 2e, Chapter 19, The Evolution of Populations (CC BY 4.0)._
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