Hardy-Weinberg Equation
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- Опубліковано 20 лип 2024
- In this video Paul Andersen explains the elements in the Hardy-Weinberg equation; including the allele frequency and phenotype frequency. He begins with a brief explanation of phenotypes and genotypes. A sample problem is worked out and another problem is included.
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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!
Velcro, the final part of the problem specifies homozygous non-red.
VelcroZGaming g
its actually 43% due to rounding
@@mummiedanser1609 yup its 0.427 so its 0.43 = 43%
@@mummiedanser1609 yeh I got 42.7 so I agree
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.
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!
not ready for that test tomorrow...
never ready
Two years later, how'd you do?
Wil McDowell ayyy
Elizabeth German same...
same...
He's like the Biology version on John Green.
+Christina McKay Wouldn't the biology version of John Green..... Be Hank Green? lol
Trevor Schmahl True XD
Hank is dope🤩but so is Mr Anderson
No, Better !
Hank is bank brah
Mr Anderson has some pretty nice phenotypes.
best pick up line!
Well he didnot make this video to show his phenotypes!!
r/woooooosh
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.
Mr Anderson, are you my dad?
+Nathaniel Anderson no
+Nathaniel Anderson Sucks for you. He's an intelligent dude.
+Bozeman Science maybe you just have similar fenotypes?
+Nathaniel Anderson haha this made me smile :)
YES
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%
You are the reason I'm passing AP bio
A hardy weinberg question came up in this years ocr biology paper, and this video definitely helped. Thank you Bozeman!
You explained it so well, it sounds so simple when you explain it!!! Thank you
I'm doing hardy Weinberg in school at the moment and thanks so much for uploading this! You are so inspirational to me :)
As always, great organization and excellent explanation as to the "whys"
Thank you! This was extremely helpful! It seems so easy now. Not sure why I was having trouble.
I happen to have an exam including this material tomorrow. I wanted to leisurely review via UA-cam and found this right on my home! What a fun coincidence! Thanks for the upload (:
I am going to try this equations in different areas to see how well it holds true in other fields.
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!
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!!!
i was looking for it on bozeman for so many days and finally it is there thank you so much sr
I'm can almost for certain say that the answer to the question he last gave is approximately 42%.
Seriously. We look alike, and have glasses, and have the same last name
He is your dad!! ;))
Cooool analogy with the socks for the masking of the recessive allele by the dominant allele!
Thanks Sir!!!!! Tried a lot to understand this equation until i found this video. SIMPLE but GREAT!!!
you my friend just restored my hopes in learning genetics.
your videos are a blessing for my biolab homework
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 ....
Thank you, this made things so much clearer!
Thank you! You explain very well.
may the science gods bless you, bc u just saved my bio grade
Thanks! The sock explanation was very creative.
Thank you for explaining! That was great, esp. the sock analogy! :)
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
simple and brilliant really appreciate your work
Can someone tell me how to Calculate p , and how it became 86 in the example
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?
Bozeman Science!! You rock. I wish I was in your class
that was really precise and concise .. Thank you so much
Thank you for a well and easy explanation. 😊
The Greatest Teacher for Me❤ Seriously, you're the best❤🔥
It is easy to calculate allelic frequencis with homozygous. But, how do you calculate allelic frequencis from heterozygus?
Bless your soul this helped me so much!
really good video for explaining the basics
thanks
Thanks a lot... Very good explanation! And also thx for talking slowly thats helpfull for german people^^
Thank you! The video was really helpful!
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
you teach better than my fiu professors! wouldn't have passed without these videos! please do not ever stop T_T
Carolina Mendana You have a professor that actually teaches? :-)
Thank you so much for your videos!
Thank you so much! this was so helpful ... GREAT teacher as always .. :))))))
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
I'm in grad school and this explains it better and more quickly than the textbook.
i love your intro soundtrack
got 42%.... would that be correct?
+Edris Zalmai ok cool :)
Thank you! That was very helpful!
..this's very nice, i hardly understand my biology teacher @ this.
sir thanks a lot vince from Philippines
thank you soooooooo much.....keep it up.....it was really very helpful
He never said I hope that is helpful
This Time he hopes its destructive.
thanks !! C: i love these videos so much
thank you. it was very helpful
god bless you , explained this much simpler than my teacher
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)?
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.
Mr.Anderson, is the answer to the problem 65%?
how would you know whether the trait is recessive or dominant. For example, how did you know that the red hair trait is recessive.
it told you in the previous question red was recessive
what if I put a black sock in a red sock? is red still recessive
No
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.
Thank you so much that's so helpful
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.
+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 :/
Very awesome video
You saved my life!
really like this video bcoz it help me alot
I love ur videos man
Thank you so much!!
Mr Andersen, you are God.
Omegasub101 god doesn't exist my brother
Think logical
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.
Kevin Schmitt this is what i got
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%
@@icecream6741 You're absolutely right.
Phenotype whats dominant?
42%?
So what is the answer to the last one 43 percent?
What video software do you use?
holy --- now I know some sh*t , thank doc this really help me.
wow ,,, yea it was really helpful ,, good job (y)
What if they give you the heterozygous number?
im confused, how did u get .86? please help
cris casicana How did he get the .86
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)
Thank you!
Nice vid. Thanks
But how do you know if the 12% red hair is Dominant or recessive in the first place?
he was using the red as a recessive trait so we should assume red is recessive
thank yu, the video was helpful
I love Boseman teaching.
very helpful!!
Thank you very much ^.^
Dude it's midnight and I have to take four more cornell notes on his videos for AP bio. Kmn
You're amazing Mr. Bozeman. Thank you
q^2=0.12, q=0.35, 1-0.35=0.65, p=0.65, p^2= 0.4225, 42.25%
THANKS FAM!
I love this man
You are Amaaaaaaazing❤❤❤
Thank you !!!
i love this man
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!
I got the same answer but I don’t know why everyone is saying 42%.
Oh yeah that was super helpful