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Do controlled pedigrees report F1, F2 and backcross ratios for named aquarium colour lines?
This record shows how a current Neocaridina evidence gap was searched. It supports a dated statement about this search, not proof that no unlocated study exists.
- Reviewed
- August 12, 2026
- Next review
- February 12, 2027
- Candidate decisions
- 3
- Governed gaps
- 1
Search scope
Taxon names: Neocaridina davidi, Neocaridina heteropoda, Neocaridina denticulata sinensis.
Concepts: colour morph cross, F1, F2, backcross, inheritance ratio, trade line.
Search surfaces: publisher and DOI records, scholarly web indexes, genetics journal indexes.
Exact queries
"Neocaridina davidi" color morph cross F1 F2 inheritance experiment"Neocaridina heteropoda" colour morph crossing genetics offspring"Neocaridina davidi" trade line dominance backcross"Crustacyanins as regulators of functional complementation" full text
Candidate-source decisions
Decoding color variation: genome-wide characterization and expression analysis of pigment pathways in Neocaridina denticulata
Directly compares molecular pigment pathways among colour strains but does not report pedigree cross ratios.
Functional Analysis of the NinaB-like Gene in Body Color Regulation of Neocaridina denticulata sinensis
Provides functional and association evidence for one colour pathway but not named trade-line F1, F2 or backcross outcomes.
Crustacyanins as regulators of functional complementation, cuticle development, lipid metabolism, pigmentation, and immunity in shrimp
The official preview reports RNA interference, multi-omics and protein-interaction work on a 24-member crustacyanin family, but the full methods and visible phenotype denominators are unavailable and no named trade-line crosses are reported.
Search outcome
The new crustacyanin study adds another functional molecular candidate, but its public record does not expose the complete units or report controlled named-line pedigrees. No study reporting complete F1, F2 and backcross phenotype denominators was located, so the inheritance gap remains open.
Knowledge gaps governed by this search
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Submit a stable source, missed search surface or correction. A candidate is not added to biological evidence until its methods and claim boundary pass review.