What Does "33% Pos Super" Mean, Anyway? | Reptile Genetics Weekly Ep 131

Item: What Does "33% Pos Super" Mean, Anyway? | Reptile Genetics Weekly Ep 131
Rating: 4
Author: PostSingularity Institute

by Dr. Ben Morrill

Life & Natural Systems Biology PSALife sciences: general issues PSAKGenetics (non-medical)

🎙 Dr. Ben Morrill 👥 4K 📅 October 14, 2025 ⏱ 39 min 👁 808 📄 science communication 🧭 2026-08-16

Available in: English (current) Français

Keywords

33% possible superdominant alleleincomplete dominanceMorph Marketleopard gene

Summary

In this episode of Reptile Genetics Weekly, Dr. Ben Morrill, joined by co-host Kayla and guests Dr. Travis Wyman and David Suladze, discusses the concept of ‘33% possible super’ in reptile genetics. They begin with a recap of the show’s recent attendance at the Tinley Park reptile expo, sharing photos and anecdotes. The main segment focuses on explaining the genetic basis of dominant and incomplete dominant traits, using examples like the leopard gene in ball pythons and the tessera gene in corn snakes. They clarify that when breeding two heterozygous dominant animals, the phenotypic ratio is 3:1, but among the dominant-looking offspring, there is a 33% chance that any individual is homozygous (super). This leads to the proposal of adding a ‘33% possible super’ label to Morph Market listings, which currently only offer ‘50% possible het’ and ‘66% possible het’ options. David Suladze, a developer at Morph Market, explains the technical challenges and possibilities of implementing this feature, emphasizing that while it is feasible, it requires careful data preparation. The episode concludes with a call for viewer feedback on whether this feature would be useful.

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Critical Evaluation

Value of the Information & Strength of the Argument

The video provides valuable educational content by clearly explaining a nuanced genetic concept that is often misunderstood in the reptile hobby. The hosts use multiple analogies and visual aids to reinforce the explanation, making it accessible to a broad audience. The argumentation is solid, grounded in Mendelian genetics, and they correctly distinguish between dominant and incomplete dominant traits. The discussion is well-structured, and they address potential counterpoints, such as the differing interests of ball python vs. colubrid breeders. The inclusion of a Morph Market developer adds practical insight into the feasibility of implementing the proposed label, grounding the theoretical discussion in real-world application.

Scientific Rigor, Source Quality, Title Accuracy

The scientific rigor is high for a hobbyist-oriented show. The hosts are knowledgeable and accurately explain genetic principles. They reference their own previous episode (114) for a deeper dive into modes of inheritance, which is a good practice. However, they do not cite external scientific literature, and the discussion is based on established knowledge rather than new research. The title accurately reflects the content, and the video delivers on its promise. The description provides links to relevant resources, including the Rare Genetics Inc. website and Morph Market stores, but these are not scientific sources. Overall, the content is reliable for educational purposes, but it is not a peer-reviewed source.

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Title / Content Match

The title accurately reflects the main topic: explaining the meaning of '33% possible super' in reptile genetics and discussing its potential implementation on Morph Market.

Quality & Reliability

8/10

The video is hosted by a geneticist (Dr. Ben Morrill) and features a guest geneticist (Dr. Travis Wyman) and a software developer from Morph Market (David Suladze). The genetic concepts are explained accurately and align with established Mendelian genetics. The discussion is educational and transparent about uncertainties. However, it is a conversational format without formal citations, and the primary focus is on hobbyist application rather than peer-reviewed research.

Key Moments

Markers derived by PSI from the transcript: the creator did not define chapters.

Cited Sources

Rare Genetics Inc. Help — Mentioned as a resource for submitting shed samples for research.
Rare Genetics Inc. Store — Mentioned as a place to order shed tests.
Morph Market Store of T.H. Wyman — Mentioned as a link to Dr. Travis Wyman's Morph Market store.
Rare Genetics Inc. Bulk Order — Mentioned as a way to order genetic testing in bulk.

Concurring Sources

Mendelian inheritance — Supports the genetic principles discussed in the video.
Dominance (genetics) — Provides background on dominant and incomplete dominant traits.

Contribution & Novelties

This video provides a clear and accessible explanation of the ‘33% possible super’ concept, which is often confusing for reptile breeders. It bridges the gap between genetic theory and practical application by discussing the potential addition of this label to Morph Market listings. The inclusion of a developer’s perspective offers unique insight into the technical considerations behind such a feature. The video encourages community feedback, fostering a collaborative approach to improving the hobby.

Pour aller plus loin :

Mendelian inheritance — Provides foundational principles of inheritance relevant to the discussion.
Dominance (genetics) — Explains the difference between complete and incomplete dominance.
Punnett square — A tool used to predict genotype probabilities, which underlies the 33% calculation.

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Radar Profile

The radar profile shows high scores in quality of information and global reliability, reflecting the expertise of the hosts and the accuracy of the genetic explanations. The quantity of information is moderate, as the video is relatively short and focused on a single topic. The technical level is moderate, making it accessible to a broad audience while still providing depth for those with some background.

Reliability 8/10

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