Genetic Mapping: Three-point Testcross and Double Crossover Interference | Genetics Ep. 27

In this video I go over how genetic mapping is completed in a three-point testcross. To explain it I work through an example data set and go through step-by-step for how to solve these sorts of problems. Three-point testcrosses are very useful compared to two-point because only one cross needs to be completed to map three genes. I also discuss interference of double crossovers and how to calculate the expected number of double crossovers based on recombination frequency. To do this I calculated the coefficient of coincidence and determined the percent of expected double crossovers that were not observed.
If you have any questions, let me know in the comments. Thanks and hope you enjoy!
Content is prepared live on Twitch so follow me there for more discussions! / drwd40
🧬 Interested in more genetics? Check out the playlist here: • Genetics
I also have some other course playlists!
🦴 Anatomy and Physiology 1: • Anatomy and Physiology 1
🧠 Anatomy and Physiology 2: • Anatomy and Physiology 2
I also do nature photography, metal detecting, and stuff in my workshop!
📸🐦🚀 Wildlife, Rocket Launches, and Travel: • Wildlife and Outdoors
💰💍⛱ Metal Detecting: • Metal Detecting
🔨 Doc's Workshop: • Doc's Workshop
➡ Check out my social pages too! streamerlinks....

[@DrWD40]

Looking for more help? I put together a free AI-based Genetics tutor using my lecture materials. Check it out on the ChatGPT site. It does require an account and free users get around 10 interactions. chatgpt.com/g/g-FJHvPSvrk-ai-genetics-tutor

[@soumyasarathimaity]

Thank you sir I am student of class 12 Very good explanation ❤From India

[@sri_shivansh]

excellent explanation!