Boa Constrictor

Adding more

Boa constrictor imperator

Hardy New-World boas with a clean, well-understood genetics toolkit. We're still expanding this list.

Recessive4

Needs two copies to show. One copy is a hidden 'het' carrier — visually normal, but it passes the gene on.

Kahl and Sharp strains — no black, high yellow-and-white contrast.

Anery

No red/orange pigment — a silvery grey-and-black boa.

Aberrant, connected pattern with clean sides.

combo

Albino + Hypo combo — a glowing, high-colour boa (a combo, shown for reference).

Shows with one copy, and shows differently with two (the 'super' form). Commonly — if loosely — called 'co-dom' in the hobby.

Reduced black for cleaner, brighter colour; stacks in the super.

Super form: Super Hypo

Shows with one copy and looks the same with two — there's no distinct super form.

Chaotic, broken pattern unique to every animal.

This is the basic guide. Combos, allelic complexes, het probability math and full morph history live in Codex.