Record mixed-colour crosses across generations
You are mixing colour lines or interpreting unexpected offspring.
Use the whole card. The action stays attached to what must be observed and recorded, plus the nearest inference or action the current guidance cannot support.
Observe first
Record each parent source and phenotype, cross direction, family separation, possible contamination and complete offspring denominator.
First action
Define whether the goal is display or a documented cross, then keep families and generations traceable before predicting outcomes.
Record next
Record parents, family, F1 and F2 counts, ordinary and unexpected phenotypes, deaths, removals, images and unclassified offspring.
Stop boundary
Do not use seller charts or selected showcase offspring to predict a complete cross, authenticate ancestry or prove genetic purity.
Continue with the governing guide
Record mixed-colour crosses across generations owns the complete method, evidence, limitations and revision history. This card introduces no separate biological claim.
Copy the complete card
Keep every part and both permanent links together.
Open the portable text version or open the complete visual card.
Copy the exact accessibility description
Use this complete description when a platform provides an alt-text field. Do not shorten away the stopping boundary.
Card version 1.0, reviewed 2026-08-12. This is a first-decision aid, not diagnosis, treatment authorization, emergency service or a complete method.