An allele is "fixed" in a population when its frequency reaches
- A
0.0 (0% — the allele has been completely lost from the pool)
- B
0.5 (50% — heterozygote frequency hits its maximum)
- C
0.95 (95% — nearly every individual carries the allele)
- Dcheck_circle
1.0 (100% — every individual is homozygous for it)
Explanation
Fixation = all individuals carry the allele. Genetic variation at that locus is lost.