An allele is lost from a population when its frequency reaches
- A
0.05 (the allele is rare but still present)
- B
0.5 (frequencies sit at the balanced midpoint)
- C
1 (the allele has been fixed in the population)
- Dcheck_circle
0 (no individual carries it any longer)
Explanation
The opposite of fixation; for one allele to be fixed, all others at that locus must be lost.