When multiple different alleles for a gene are present in a species's population it is called polymorphic. Most different alleles are functionally equivalent, however some alleles can give rise to different phenotypic traits. A gene's most common allele is called the wild type, and rare alleles are called mutants.
Combee will evolve into Vespiqueen at level 21, but only if it is female. Male Combee do not evolve. There is a 1/8 chance of a wild Combee being female. This is really rare iâ¦n HG and SS because Combee are a rare spawn period. 4 people found this useful.
Leafeon-Moss Rock, any level-Eevee will  only evolve into its Grass-type form when levelled-up in the  vicinity of a Moss Rock. In X/Y, you'll find it on Route 20, the  Winding Woods.  Glaceon-Ice Rock, any level-Eevee will  only evolve into its Ice-type form when levelled-up in the vicinity  of an Ice Rock. In X/Y, you'll find it within the Frost Cavern.  Surf is required to reach it.