Solving Hardy Weinberg Problems

Paul Andersen shows you how to solve simple Hardy-Weinberg problems. He starts with a brief description of a gene pool and shows you how the formula is derived. He then shows you how to solve a couple of sample problems.
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How did he get .6 for P

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What saved me: "when talking about allele frequency, you use p and q. when talking about people, you use p^2, 2pq, and q^2." YOU ARE LIFE SAVER

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Looks at notes- Yep that is one of the main things I squared on my notes!

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thank you for writing this comment i almost left this video bc i couldn't find clarification and you just saved my life before a bio exam. thanks again

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me too chile.... i just wanna give him my biology fees because how TF did my lecturer miss this important piece of info?

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6 years on, yep.

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I'm in middle school and I have a test on this tmr

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Jeannie Weasly and I am learning all this in high school...

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i learned this in high school, did great, forgot it all, and have to do it again in uni. It keeps coming back to haunt me!

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I just wanted to say thank you after nearly 10 years of watching your videos - I started watching while taking Honors Chem in high school, went through my Biomed undergrad and a Masters, and now am taking my Genetic Counseling board exam next week. I knew whenever I needed a concept explained, I could count on an in-depth review by you. Truly, thank you!

[@JerrySpringfield1]

Being taught this during online classes is a nightmare. They give you some chart that explains absolutely nothing, then it asks you to solve all these problem. Literally have had to teach myself for two semesters now from KZbin videos. Glad these exist.

[@Pokechamp653]

A way I learned to remember which one im looking for: The word "Population", contains 2 P's, and the word "Frequency" Contains 1 Q, Which is exactly what youre looking for in each. (Just remember that youre most likely going to be looking for Q squared first with populations)

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Thx

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Thank you for sharing this method!

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thank you so so much for this!

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@@yashinipandi7235 youre welcome! its only been a year and not only have i totally forgotten this comment but i have no memory of the actual work or what its about. (says a lot about the one and done education system) but i can say that i got an A on the exam, so best of luck! lmao

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Smart

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You just saved me from failing my quiz tomorrow in AP biology. Thank you!

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my teacher was to lazy to teach us so she assigned this video for homework

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My biology 30 teacher doesn't even teach anymore... he just shows your videos because he knows that you can explain it way better than he can. thank you Mr.Anderson

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I love bio, but I just could not for the life of me get myself to understand this equation. Idk why but you explained it so much better than all of my professors ever had combined. Much appreciated sir.

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I usually have to watch 1 or 2 of your videos every week for APBio, and they're always helpful. You explain things very clearly and concisely. Thank you so much!

[@x0cx102]

At 3:28, he mentions the probability of getting two reds is (7/10) * (7/10) according to the law of "multiplication". In a sufficiently large sample size, this would be approximately correct, but in his analogy, the probability of getting two reds would actually be (14/20) * (13/19), as they aren't independent events here.

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That's what I was thinking but I dont think the gene pool changed when he took the second sample.

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And even more precise; (14/20) * (13/19)

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I learned more from this video than from my ap biology teacher

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I just got my mark back for my first year university bio...I was sure I was failing the class but I went into my final exam worth 50% of my grade confident that I would do well after watching these videos! I'm sure these videos helped me boost my mark up two letter grades, with this one helping the most. There where about 4 questions on the exam about the Hardy Weinberg Equation and I would not have known the answers had I not watched this video. THANK YOU SOOOO MUCH FOR POSTING THEM!

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Totally cleared things up for me...I've been reading about this concept over and over and couldn't grasp it until now, thanks to you...you are an angel!

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The best Hardy Weinberg explanation online. Totally worth the watch. Thank You

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Looks like I'm not failing my biology test tomorrow.

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did you fail it

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Thanks a million! I learn 10 times as much watching your videos as i do in my freshman honors bio class! Thanks again and again and again!

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Dang, still a lifesaver with a decade old video..thank you!!

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[@99growlithe99]

Lol, comparing the evolutions of two Pokémon on a video relating to evolution. Nice.

[@itsnotme6869]

99growlithe99 technically you can't use hardy weinberg when evolution is happening because the population would change. Sorry for being a smartass

[@RaincloudTheDragonXD]

Floor Abbestee huehue well played :3

[@traviswilson1993]

This was awesome. I've never taken a class on this or anything but halfway through the video I understood why the formula is the way it is and I even made up a method to solve when there are 3 alleles, so thanks a lot!

[@traviswilson1993]

(if the third allele is z) p^2 + q^2 + z^2 + 2pq + 2pz +2qz = 1 I quickly realized that the base equation is rarely viable because it only applies when there are 2 possible alleles. In the case of this new equation, 1 given is not enough, (because there are 3 variables in the equation) so you would need 2 givens to actually solve it.

[@bachukidalakishvili6658]

Good mathematical thinking,but know this.Traits are usually determined by 2 alleles,so you don't have to struggle so much.The only time 3 alleles are used is during Codominance(blood types would be an example)but still good job

[@suzig6185]

This video is awesome. For one thing, it's at least a minute shorter than all of the other videos on this subject I've seen, and I actually get the material now. Thanks!

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Lifesaver! Thanks for calming my seething brain, and helping me breathe deep and see through all the confusion.

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awesome video super helpful

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YOURE MY SAVIOR!!!! My exam is in 7 hours!!!! Thanks man!

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I want to give this more than 1 thumbs up :') you sir are a legend

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I just sent two of your videos to one of my students to clarify the Hardy-Weinberg mess she had to decipher! 😊 Teachers and students everywhere enjoy what you do! You are CLARITY in a sea of mis and dis information!!!

[@prettyangry5665]

I haven't been able to do Hardy-Weinberg all year long. I've had my teacher show me how to do it, I've read my textbook over and over, but I still couldn't grasp it. Tomorrow I've got an important biology exam, and the likelihood of Hardy-Weinberg coming up is very high. I can't even thank you enough for how much this video has helped me. I grasped it immediately!

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wow thank you. it took my TA in college 4 hours to explain hardy weinberg and chi-squared test while it only took you 20mins. thanks a bunch

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Hello. How those 10 years?

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You taught me more in 10 minutes than my teach did in 80

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You did hardy weinberg in an hour and a half?

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This really actually helped me out, one of the first on KZbin especially since there aren't many good education videos on KZbin. THANKS!!!

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ayeeee midterm time

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2020 over here and i got my test in an hour

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2021 AP bio gang

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Once again sir you save me from failure in AP Bio

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its been 3 years , ive watched numerous class on this topic and finally today ...i know what it means.. thnk you

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Thank you sooooo much your channel has literally been my saving grace throughout my entire science degree.

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You must be the greatest teacher ever!

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I was so lost when my bio teacher was explaining this, I stared at the homework all class period lol this helped me out, at least I know where to start now.

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Excellent explanation .. I loved the fact you explained where the equation had come from .. Lots of thanks for the effort you've put in .. really appreciated

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WOW! Thank you so much! I learned about the Hardy-Weinberg equation this week in high school Biology, but my Biology teacher is not good at explaining things and he is also sort of a jerk, so its really hard to get help from him. However after watching this video I clearly understood how to solve it now, that teacher is the GOAT. I subscribed to the channel, I am relieved that I found this video. My Biology weekly quiz is tomorrow!

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I can't tell you how happy I am to find your video I was totally hopeless to get to understand this. Some how you made it simple. Thanks a lot

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Blankly stared at my bio teacher for 40 minutes, came here and learned it in 11 minutes.

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Best video for my college education.

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Thank you soooo much!! My teacher doesnt explain this too well, she goes SOO fast!! But you go slow and actually explain. Thank you omg...

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I was struggling to memorize which matches up with which but you explained it perfectly. Now I understand so memorization isn't necessary. Thanks Mr. Andersen!

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After 11 years, I still found this video super useful, thank you so much

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how did you get .6 at 7:30

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Great jobs! Thx from Germany!

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Great tips! Hopefully when I take my practice exam tomorrow I'll use what you taught in the video! Thank you so much now that I have a better understanding of how to attack a Hardy Weinberg problem!

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Thank you so much for this lesson. I studied this equation from a textbook and thought I had it figured out until I started struggling with applying the knowledge onto the problems. Your video helped a lot with that. Thanks again!

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I absolutely failed this in bio... Two/three years later I find this video and a light bulb went off. Thank you!

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Thank you so much ! It helps a lot :)

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I read the whole text book and didn’t find anything explaining this so I found you and OMG YOU SAVED ME AND MY GRADE. ForEVER THANK YOU

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Thank you for these online lectures. These are gold :)

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so much better than my Biology teacher.

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Thank you got an A on my lab quiz cause of you

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This guy is great! Explanations are so clear!

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This is the best explanation I have seen yet. You are amazing thank you so much!

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29 people either don't speak English, or are rival instructors.

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lol

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i just took the 2020 practice AP bio test and holy fuck the hardy weinburg part single handedly made me run out of time

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Went back to college after dropping out years ago and my professors started throwing this at us with no explanation. All the younger kids got it but I didn't have any idea what they were talking about. This video made it crystal clear!

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You explained this so well. I have a science test tomorrow and we have questions on this and I understand it perfectly now.

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AP BIO tomorrow!!!

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Thank you Mr . Anderson !! Your videos always help me .

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howd he get 7/10????? Plz answer quickly :(((

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Thank You.. May God Bless You..

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I wish my professor was like this, because I spent 30 minutes listening to him and couldn't quite understand and then I watched your video and in 5 minutes I could solveall of this easily. A very good video.

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Thank you! I'm from Brazil, I have a test tomorrow and you saved my life. ❤

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dude the fact that your such a good teacher and i still don’t get it proves i’m an actual unreachable idiot

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same here

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Hello Fellow AP Bio students

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I need this for hn bio 😢

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really helped me review for my final and clear up what I have learned in class over the last 18 weeks

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Bozeman science AKA paul anderson the legend you have gotten me through my first year of college biology. Thank you so much you are doing a great service sir.

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i have to come here because my biology teacher hates all of us and doesn’t teach us in class

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This video is handy for all bio sciences. Currently watching it for a biological anthropology class and its been nearly ten years since this video came out and it still works wonders.

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This helped me ten years after it was uploaded I’m so grateful