What does it mean for an allele to become fixed, and what does it imply?
A. The frequency of the fixed allele has become 0% because it was detrimental.
B. The frequency of the fixed allele has become 0% and is no longer present.
C. The frequency of the fixed allele has become 100% because it is beneficial.
D. The frequency of the fixed allele has become 100% and other alleles are lost.
Answer: D. The frequency of the fixed allele has become 100% and other alleles are lost.
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