Hardy-Weinberg Equation

[@SherlyElise]

Given Info: 12% red hair (homozygous recessive or q^2) What we need: % for non-red hair (homozygous Dominant or p^2) Step 1. Solve for q^2 q^2= 12% or (0.12) √(q^2) = √(0.12) (radical sign on both sides to get rid of the square) q= 0.35 Step 2. Solve for p Equation= p+q=1 So if solving for p (p= 1-q) p= 1- (0.35) p= 0.65 Step 3. Solve for p^2 (0.65)^2 = 0.42 Step 4. Change it to percent 0.42 x 100 = 42% -Thank you Mr. Anderson for all of your videos!

[@VedavyasMunugoor]

Velcro, the final part of the problem specifies homozygous non-red.

[@leahsmo928]

VelcroZGaming g

[@mummiedanser1609]

its actually 43% due to rounding

[@mbe0102]

@@mummiedanser1609 yup its 0.427 so its 0.43 = 43%

[@oliverpdcook]

@@mummiedanser1609 yeh I got 42.7 so I agree

[@the_jacked_doc]

I watched your videos getting into medical school and now I'm in Medical school and still watch your videos on certain topics. Crazy how some medical school professors can't articulate a concept like the way you can.

[@lukashumber582]

hi mr bozeman it is currently 2023 and im taking ap bio in school with my exam in 3 days. I had no idea how to do the hardy weinberg equation because i was trying to solve it as an equation and you've really helped clear it up with me. not only that you've helped me for the majority of the year and im so grateful for that. its amazing that these videos with your concise and simple explanations can still be relevant 9 years later. keep it up!

[@elizabethfunbun94]

not ready for that test tomorrow...

[@cabbageman6309]

never ready

[@buttermilk_pie]

Two years later, how'd you do?

[@omarawwad1890]

Wil McDowell ayyy

[@kaiyo_o6477]

Elizabeth German same...

[@andyvelez3822]

same...

[@christinalange3280]

He's like the Biology version on John Green.

[@TrevorSchmahl]

+Christina McKay Wouldn't the biology version of John Green..... Be Hank Green? lol

[@christinalange3280]

Trevor Schmahl True XD

[@vaishnavimatti2508]

Hank is dope🤩but so is Mr Anderson

[@nadakhalil9938]

No, Better !

[@Whoisthatguy906]

Hank is bank brah

[@thomasratliff9278]

Thank you again Sir. I should thank you for every time I learn from your lesson. I will begin to be more respectful from here forward.

[@Sana-jb5zu]

morning of my exam, thank you!! you make this so simple and easy to understand now im not going to lose any marks if it comes up!

[@CowsClub]

A hardy weinberg question came up in this years ocr biology paper, and this video definitely helped. Thank you Bozeman!

[@WBCStudio.]

Thank you professor, you have contributed to my understanding of this complicated equation. For the last problem you have us, q=✓.12=0.346 p= 0.654. Since p2+(2)qp+q= 1, 2pq= 0.452. This is the percentage of the population that are heterozygous for non-red hair. The percentage of the population that is homozygous for non-red hair is 43%

[@transmutation-alchemist5802]

you my friend just restored my hopes in learning genetics.

[@heyashleyestrada]

I happen to have an exam including this material tomorrow. I wanted to leisurely review via KZbin and found this right on my home! What a fun coincidence! Thanks for the upload (:

[@annamarie6712]

You explained it so well, it sounds so simple when you explain it!!! Thank you

[@aajuicygirl]

You are the reason I'm passing AP bio

[@79laksiri]

Thanks Sir!!!!! Tried a lot to understand this equation until i found this video. SIMPLE but GREAT!!!

[@sophi3love]

I'm doing hardy Weinberg in school at the moment and thanks so much for uploading this! You are so inspirational to me :)

[@taladiv3415]

Cooool analogy with the socks for the masking of the recessive allele by the dominant allele!

[@vincentlenart1697]

Thank you! This was extremely helpful! It seems so easy now. Not sure why I was having trouble.

[@jillwild23]

As always, great organization and excellent explanation as to the "whys"

[@gayatriduhan9873]

i was looking for it on bozeman for so many days and finally it is there thank you so much sr

[@LearnsubmissionsHere]

I am going to try this equations in different areas to see how well it holds true in other fields.

[@dayannaortiz2257]

Thank you so much for helping me understand this! Starting AP Biology tomorrow and natural selection is the first topic we're learning and now i feel a lot more comfortable and ready for tomorrow and the year, thank you!!!

[@cydney5049]

I'm in grad school and this explains it better and more quickly than the textbook.

[@melissamiliam412]

your videos are a blessing for my biolab homework

[@Kaiju-j2f]

I'm can almost for certain say that the answer to the question he last gave is approximately 42%.

[@zipporahdianeesmeralda9492]

The Greatest Teacher for Me❤ Seriously, you're the best❤‍🔥

[@mourningmelody]

may the science gods bless you, bc u just saved my bio grade

[@nathanielanderson8753]

Mr Anderson, are you my dad?

[@Bozemanscience1]

+Nathaniel Anderson no

[@siribrown9690]

+Nathaniel Anderson Sucks for you. He's an intelligent dude.

[@andersaubry]

+Bozeman Science maybe you just have similar fenotypes?

[@ummewaseem5983]

+Nathaniel Anderson haha this made me smile :)

[@kalebg1706]

YES

[@buttermilk_pie]

Thanks! The sock explanation was very creative.

[@1mlevi1]

Bozeman Science!! You rock. I wish I was in your class

[@nathanielanderson8753]

Seriously. We look alike, and have glasses, and have the same last name

[@murodmahkamov359]

He is your dad!! ;))

[@woodwoodchuck546]

Thank you so much for your videos!

[@Chris-nl3pj]

Thanks a lot... Very good explanation! And also thx for talking slowly thats helpfull for german people^^

[@iamlearning100]

simple and brilliant really appreciate your work

[@marintiamayolanava4019]

Thank you! You explain very well.

[@lauraromdeussen864]

I cannot be the only one going "exactly what size shoe ARE you b/c those socks are HUGE!!!" And also, this was a beautifully simple way to explain a concept I was not understanding.

[@u.s.aamerica2695]

god bless you , explained this much simpler than my teacher

[@jemima6458]

Thank you for explaining! That was great, esp. the sock analogy! :)

[@DCUPtoejuice]

it would be good to mention that the p2 and q2 terms are derived from the likelihood of two of those alleles both being present in an individual given their frequency in the gene pool

[@irinakhokhryakova6825]

Thank you, this made things so much clearer!

[@szym0n986]

You saved my life!

[@mohamadhamad92]

that was really precise and concise .. Thank you so much

[@isabellevonlockner1186]

Bless your soul this helped me so much!

[@itsMizaa]

Thank you for a well and easy explanation. 😊

[@frkurfamsoad]

really good video for explaining the basics thanks

[@sweetlife3623]

i love your intro soundtrack

[@ysminlv]

Thank you! The video was really helpful!

[@AFCAdutchie]

I love ur videos man

[@lokeshkoomarstyagee6742]

sir u are crazily awesome the answer is 44%

[@rakshagupta9048]

Thank you so much for the understanding of concept. I am stuck in this question Given gene A at frequency 0.2 and gene B at frequency 0.6, find the equlibrium frequencies of gametes AB, Ab, aB and ab. Plese explain this question

[@zoyaharoon9252]

thank you soooooooo much.....keep it up.....it was really very helpful

[@thehighhost2084]

It is easy to calculate allelic frequencis with homozygous. But, how do you calculate allelic frequencis from heterozygus?

[@rakshanabala5062]

I got everything... but just wanted to know what if we are considering genes having more than 2 alleles like the I gene that codes for the sugar polymer on the surface of the RBC's which has 3 alleles ?? (ABO blood grouping) In that case how does this principle work ? Someone help me with it.. i am just a beginner ....

[@nadakhalil9938]

You are Amaaaaaaazing❤❤❤

[@Mrssunshine5991]

thanks !! C: i love these videos so much

[@mredoward9858]

Can someone tell me how to Calculate p , and how it became 86 in the example

[@SmithCraftCo]

Thank you so mush Mr. Anderson! My teacher has been confusing me so much with this and she recommended me here! I got 65% homozygous for non-red hair!

[@EvangelistIfunanya]

I got the same answer but I don’t know why everyone is saying 42%.

[@morotigyan8353]

Very awesome video

[@yassinessam3945]

Thank you so much! this was so helpful ... GREAT teacher as always .. :))))))

[@hailiejadeable]

thank you. it was very helpful

[@nanszy]

Thank you! That was very helpful!

[@poseidon878]

Mr.Anderson, is the answer to the problem 65%?

[@nurulainishaari2419]

really like this video bcoz it help me alot

[@bahahos7426]

Thank you very much, the answer of the last quation 0,44= 44.% :D

[@Stockcryptocritique]

I love Boseman teaching.

[@카리나-b3g]

My book isn't this awesome, I finally understood this topic, thank you so much!!! (I'm from Mexico and I'm 16 years old so.. my english isn't quite good, sorry)

[@genesislayne3322]

got 42%.... would that be correct?

[@genesislayne3322]

+Edris Zalmai ok cool :)

[@TheJame2383]

holy --- now I know some sh*t , thank doc this really help me.

[@namimiyagi857]

Thank you so much that's so helpful

[@TheSilvermoondancer]

Can someone help me solve this problem?In a population of 500 individuals, 200 are genotype AA, 125 are genotype Aa, and 175 are genotype aa. What is the frequency of the dominant allele A? What is the frequency of the recessive allele a? Given these allele frequencies, what does Hardy-Weinberg predict will be the frequencies of each of the three genotypes? Is the population in Hardy-Weinberg equilibrium? Fully explain your answer.

[@maydayramsden1205]

+TheSilvermoondancer p^2 = 200/500 = 0.4 (AA) 2pq = 125/500 = 0.25 (Aa) q^2 = 175/500 = 0.35 (aa) 0.4 + 0.125 = 0.525 (A) And sorry, I don't know if it's in Hardy-Weinberg equilibrium :/

[@waheedkakar6741]

hey; mr anderson i solved out the answer can u plz tell me whether it's right or wrong the percentage for homozygous non red hair is 43.56.....and i found ur tutors very helpfulll thankssss

[@naraharipothamsetty9084]

Thank you for saving my biology grade, oh father of my bio grade

[@alicesams2851]

When would you multiply by 2? My teacher mentioned how if there is, for example, an individual who is recessive, then you multiple that gene by 2 and I'm getting confused with why you would square q instead?

[@codyellsworth7927]

Nice vid. Thanks

[@janecrus9484]

Pls. Help me with this problem. there are 300 organisms who carry the homozygous dominant gene, 200 organisms who carry the heterozygous gene and 250 organisms who carry the homozygous recessive gene but this data does nit obey the Hardy-Weinberg equilibrium, you should add the same number of species who carry the homozygous dominant gene, organisms who carry the heterozygous gene and organisms who carry the homozygous recessive gene so that the population will be double the original number of individuals. in order to be in the Hardy-Weinberg equilibrium, How much organisms for every genotype you should add and what will be the resulting allele frequencies?

[@Omegasub101]

Mr Andersen, you are God.

[@hatz6039]

Omegasub101 god doesn't exist my brother Think logical

[@demolidor0518]

Brazilian here, good class

[@alexandrebaraka1]

i'm also brazilian and i must say mr. andersen is an amazing teacher. this class is top notch

[@lucasament1173]

Dude it's midnight and I have to take four more cornell notes on his videos for AP bio. Kmn

[@ezzeldin3714]

If you know what an allele is and what genes are, skip to 5:07

[@kevinschmitt3113]

q^2=.12 q=.346 p=1-q=1-.346=.654 2pq=2(.346).654)=.452=45.2% 43% is a little bit too much rounding in my opinion.

[@u.s.aamerica2695]

Kevin Schmitt this is what i got

[@icecream6741]

that's incorrect. he is asking for "HOMOzygous", so what you're supposed to do is p^2 the p --> (0.654)^2 = 0.427 = 42.7%

[@spacesax1]

@@icecream6741 You're absolutely right.

[@tetsurin5154]

Oh yeah that was super helpful

[@DA-sj2gw]

The Hardy-Weinerg law makes it possible to predict the allele frquencies (for a locus in a population) based on the observed genotype frequencies. (True or False)?

[@possible_world_productions2789]

You have confused me. I am unsure of your question because I don't know. I would think FALSE because not all locus have the same genes or appearance in certain area.

[@tatendamade2331]

thank yu, the video was helpful

[@yadiradeleon650]

i love this man

[@jakewoodruff51]

how would you know whether the trait is recessive or dominant. For example, how did you know that the red hair trait is recessive.

[@briangoldstein3007]

it told you in the previous question red was recessive

[@clayclay136]

So what is the answer to the last one 43 percent?

[@sabeenbaqee6332]

wow ,,, yea it was really helpful ,, good job (y)

[@thomasriley865]

This was helpful

[@YaKnowMe29]

What video software do you use?

[@maryphillips8614]

Thank you so much!!

[@Candyicsma]

He never said I hope that is helpful

[@SERGE_Tech]

This Time he hopes its destructive.

[@Juganuu]

Im not even in AP bio and I watch these. I will be next school year doe, ill be ready lol.

[@KiLLerBeast1O11]

im confused, how did u get .86? please help

[@mindcraftful]

cris casicana How did he get the .86

[@snehachandrashekar8110]

Thank you !!!

[@monarchgaming9360]

what if I put a black sock in a red sock? is red still recessive

[@ForzaWiz11]

No

[@edwardmitchell6002]

The question is how many are HOMOZYGOUS for NON-Red Hair...not dominant or recessive. Remember red hair is a recessive trait so although the 2(P)(q) group will carry the trait red hair will not be expressed, but they are HETEROZYGOUS. So, the only HOMOZYGOUS NON-RED HAIR group is P^2 the answer is .427 or 42.7% or rounded off to 43%

[@siddhantharit]

very much helpful☺

[@technoshindo]

Daddy Anderson saves the day again with his sexy phenotype

[@johnbuttler915]

What if they give you the heterozygous number?

[@maeakins6132]

Since the last question asked for the homozygous dominant, the right answer should be 65% I did it twice and arrived at this answer

[@dabj9546]

You forgot to square p. So the answer is 42.7%. Probably nothing you could care less about three years later just wanted to mention it.

[@alejandraceledon4547]

Mr.Anderson is Teacher Goals