Linked from
The 73 pages that link to Allele, each with the reason it gives.
Gene flowBroader topic: Alleles are the variants transferred when genes move between populations.
Allele frequencyBroader topic: Allele frequency tracks copies of a specific alternative at a locus.
GeneticsBroader topic: Alleles provide a basic way to describe inherited differences.
HybridBroader topic: Hybrids inherit alleles from both parents, producing new combinations.
MicroevolutionBroader topic: Microevolution tracks how common particular alleles become.
Genetic phenomenaBroader topic: Different alleles can produce distinct inherited effects.