Question

what is the gene of Alcon white wings

Answer 1

I’m not sure which organism you mean by “Alcon white wings.” Do you mean the Alcon blue butterfly (Phengaris/ Maculinea alcon) and asking what gene controls a white-winged morph, or something else (a different species, a cultivar, or a particular mutation)?

A few quick points while you clarify:
- I don’t know of a published, single “white-wing” gene specifically named for Phengaris/Maculinea alcon. Lycaenid butterflies (the family that includes Phengaris) have been less intensively mapped for wing-colour loci than Heliconius, so a species-specific locus may not be described.
- In butterflies generally, wing colour and pattern are controlled by a small set of repeatedly implicated genes and pigment-pathway genes, for example:
- optix — often associated with red/orange pattern elements
- WntA — controls melanized (dark) pattern boundaries
- cortex — associated with switching scale cell fate and melanism
- aristaless (al1) — implicated in white vs yellow scale fate in some species
- doublesex — controls sex-limited mimicry patterns in Papilio
- pigment-pathway genes (yellow, ebony, tan, DOPA decarboxylase, etc.) — affect melanin and other pigments
- “White” can arise either from absence of pigment (pigment-pathway suppression) or from structural/scale changes; which mechanism matters for which genes are involved.

If you tell me exactly which species or population and whether you mean a natural white morph, an experimental mutant, or a pattern element, I can:
- search the literature for any named genetic locus in that species, or
- suggest candidate genes and experimental approaches (QTL/GWAS, RNA‑seq, CRISPR) to identify the causal gene.