HARDY WEINBERG EQUATION made easy for USMLE STEP 1 | Explained with example | Genetics

* You can find this topic on page no. 81 in First Aid 2015 and page no. 69 in First Aid 2016.
* At 7:23 i said 'p+q= 1/1000'....it should be 'p+q=1'. Its just slip of tongue. Please take a note of this.
* Do not forget to solve the question in the end of video.
* All the homozygous form of hereditary spherocytosis does not result in live birth. Although the main aim of question is to give the practice for Hardy Weinberg equation, just change the name of disease from Hereditary Spherocytosis to any other autosomal dominant disease whose homozygous form does not result in death. Rest of the question remains exactly same. There will be no change in answer.
* Facebook - / meetpatelmd
* Email ID - fastaidstep1@gmail.com
* If you are first or second year medical student or if you have more than one year to prepare for USMLE Step 1 or any other exam then I strongly recommend you to watch Dr. Najeeb lectures to make your concepts very clear. If you don't have enough time to prepare for USMLE Step 1 then I would not recommend you to go through all the videos of Dr. Najeeb, just watch Neurology and Immunology.

Пікірлер: 110

  • @m7rocks70
    @m7rocks704 жыл бұрын

    I GENUINELY wanna thank you !! You made every hard part easy and easily accessible ! Keep posting videos !

  • @reemabdullah9877
    @reemabdullah98775 жыл бұрын

    Thanks so much, I’ve been trying to figure this out for 2 hours go bless

  • @psid8
    @psid87 жыл бұрын

    Great explanation! I don't know how I will do all this in 75 seconds lol

  • @azifahahmed4462
    @azifahahmed44624 жыл бұрын

    Thanks for the video. I have a question regarding X-linked dominant disease like Charcot-Marie-Tooth disease (CMTX1) does the Hady Weinberg equation work for finding out the prevalence of the disease?

  • @embee293742
    @embee2937426 жыл бұрын

    Meet you are a life saver. Cleared so many things just few days before my exam. God bless you

  • @avneetsandhu9433

    @avneetsandhu9433

    6 жыл бұрын

    hi.please can u clear my one doubt = in the question given at end we have to keep 1/5000 = to what q2 or 2pq.please reply soon and please tell how did u decide about that.i will be very thankful to u.

  • @allengeorge2719
    @allengeorge27195 жыл бұрын

    You are a legend!!! Great explanation

  • @anilk1241
    @anilk12417 жыл бұрын

    Loved the explanation on how the equation is derived , and also the bonus on XLR and AD diseases with Hardy weinberg !! Good going meet

  • @Meetpatel-pu6me

    @Meetpatel-pu6me

    7 жыл бұрын

    anil kumar thank you...mention your answer in a new comment if you know 😊

  • @misstaniamaryam
    @misstaniamaryam4 жыл бұрын

    Thank you for explaining it sooo well : )

  • @avneetsandhu9433
    @avneetsandhu94336 жыл бұрын

    nice video but i have one doubt that we have to learn whether disease is autosomal reccessive or dominant.If yes then please tell about disesase frequently asked in paper.plz reply soon

  • @wajihansari363
    @wajihansari3637 жыл бұрын

    hey patel this is the first video i have watched and certainly this isnt the last one :) youre doing a pretty good job keep up the good work..god bless you brother

  • @Meetpatel-pu6me

    @Meetpatel-pu6me

    7 жыл бұрын

    wajih ansari thank you brother...good luck for your preparation and exam :)))

  • @gillianramirez
    @gillianramirez3 ай бұрын

    Thank you SO much for this.God bless you!

  • @Sunitasingh12375
    @Sunitasingh123754 жыл бұрын

    1 question came in neet ug 2019 thanks for best explanation 😇😇

  • @manjimaomanuluck1360
    @manjimaomanuluck13605 жыл бұрын

    Hey...nice video lecturer...east to understand...thank u👌

  • @mariamr2832
    @mariamr28325 жыл бұрын

    Thank you so much.. i calculated and the answer i came up with is 1/6250000. is it correct ? Plz reply.

  • @najimdinpedro2780
    @najimdinpedro27803 жыл бұрын

    Thank you so much, Patel.

  • @BalaBiologyWorld
    @BalaBiologyWorld6 жыл бұрын

    thanks a lot sir for making this so easy

  • @makrylemis
    @makrylemis7 жыл бұрын

    Excellent. Thank you very much for clearing up such a simple principle.

  • @Meetpatel-pu6me

    @Meetpatel-pu6me

    7 жыл бұрын

    Welcome bro :))

  • @omotolaa8015
    @omotolaa80156 жыл бұрын

    Hi Patel, thank you so much for this video and do keep up the good work! Please I have a question...why did you say (at about 8.40) that the chance of Mrs. X being a carrier is 1? Isn't the chance of being a carrier always calculated as 2pq? Could you please explain why it is 1?

  • @nooraykhalid7498

    @nooraykhalid7498

    11 ай бұрын

    you are right. you have to multiply that q value with 2

  • @beenishusmani4894
    @beenishusmani489411 ай бұрын

    Thank you SO much for this video!

  • @dr.symptomatology8064
    @dr.symptomatology80644 жыл бұрын

    Thanks! Great as always ANSWER: AD 2pq=1/5000 p=1 2q=1/5000 q=1/5000 *1/2 q=1/10000 q^2=1/100000000 I think!

  • @habib080

    @habib080

    4 жыл бұрын

    Why did you multiply by 1/2 ?

  • @umerbinshabir6561
    @umerbinshabir65615 жыл бұрын

    Can we solve autosomal dominant disease questions on it

  • @lirijingru4598
    @lirijingru45986 жыл бұрын

    thank you.. great One

  • @vigwiz
    @vigwiz7 жыл бұрын

    it's getting better N Better :)

  • @Meetpatel-pu6me

    @Meetpatel-pu6me

    7 жыл бұрын

    wizvig subbiah haha thank you....getting new experiences and ideas after every video :)

  • @nishichandrasekaran1076
    @nishichandrasekaran10767 жыл бұрын

    loved it as usual:) thanks a bunch:)

  • @Meetpatel-pu6me

    @Meetpatel-pu6me

    7 жыл бұрын

    Nishi Chandra thank you doctor 👍

  • @shivleengill4976
    @shivleengill49764 жыл бұрын

    Can you kindly help me with it ? If I am wrong

  • @umerkhan7545
    @umerkhan75454 жыл бұрын

    genius at work

  • @ambreenhamid5326
    @ambreenhamid53267 жыл бұрын

    Thank you so much :) you are amazing

  • @Meetpatel-pu6me

    @Meetpatel-pu6me

    7 жыл бұрын

    ambreen hamid thank you very much :)

  • @khushbuluhar11
    @khushbuluhar114 жыл бұрын

    Thanks alot!

  • @niteshsalvi9
    @niteshsalvi96 жыл бұрын

    thanks Meet it made made my day really helpful

  • @RolexMrFit
    @RolexMrFit5 жыл бұрын

    1/100000000....AD inheritance of hereditary spherocytosis so....2pq = 1/5000...p~1 therefore...2q=1/5000....and thus q=1/10000 and hence (1/q)2 =1/100000000....since (1/q)2 = homozygous diseased

  • @letslearn7857
    @letslearn78576 жыл бұрын

    Good presentation. I suggest it will better if you make it more precise and to the point.

  • @242Elle
    @242Elle6 жыл бұрын

    Thank you for your explanation! For the question I got 1/100,000,000 --> Because if Prevalence of Hereditary Spherocytosis is 1/5000 which is 2pq where p = 1 then q = 1/5000 x 1/2 x 1 = 1/10,000 and since Hereditary Spherocytosis prevalence is q squared therefore it is 1/10,000 squared = 1/100,000,000... please let me know if I got it. Thanks

  • @RenataBP
    @RenataBP Жыл бұрын

    Bless you !!!

  • @jameskshuk1
    @jameskshuk15 жыл бұрын

    Pliz explain more topic abt cardio topic . Tq

  • @b4birjupatel
    @b4birjupatel5 жыл бұрын

    Sakkhat Explanation! Cleared all the doubts. Thank you Mitra! Btw, Are you a Resident or what? :)

  • @b4birjupatel

    @b4birjupatel

    5 жыл бұрын

    So, Answer would be, 1/10^8 Right? Explanation: 2pq=1/5000 ----> q=1/10000 q2=1/10^8

  • @susaaku1808
    @susaaku18087 жыл бұрын

    Thanks, it's amazing

  • @Meetpatel-pu6me

    @Meetpatel-pu6me

    7 жыл бұрын

    Susa Aku you are welcome 👍

  • @511Freedom
    @511Freedom7 жыл бұрын

    Amazing ! thank you

  • @Meetpatel-pu6me

    @Meetpatel-pu6me

    7 жыл бұрын

    511Freedom welcome :))

  • @archanathakur9743
    @archanathakur97435 жыл бұрын

    Boy with such beautiful handwriting strange !!!!!!!!! Anyway jokes apart it was really helpful Thaks alot :)

  • @nicky5366
    @nicky53667 жыл бұрын

    Wow! Thanks so much!

  • @Meetpatel-pu6me

    @Meetpatel-pu6me

    7 жыл бұрын

    Nicky Shanel you are welcome :)

  • @mcatalina4071
    @mcatalina40717 жыл бұрын

    great explanation

  • @Meetpatel-pu6me

    @Meetpatel-pu6me

    7 жыл бұрын

    Thank you :)

  • @kanchhofreeman9642
    @kanchhofreeman9642 Жыл бұрын

    Why is it the you have put p +q = 1/1000...would you please explain...thank you.

  • @harikadoddi1299
    @harikadoddi12997 жыл бұрын

    Thank you so much

  • @Meetpatel-pu6me

    @Meetpatel-pu6me

    7 жыл бұрын

    harika raghu you are welcome :)

  • @user-oi4ql1cd2b
    @user-oi4ql1cd2b27 күн бұрын

    How are we supposed to do this in 90 secs?

  • @sudhakarkondaparthy5623
    @sudhakarkondaparthy56237 жыл бұрын

    Beutiful explanation.

  • @Meetpatel-pu6me

    @Meetpatel-pu6me

    7 жыл бұрын

    Sudhakar Kondaparthy thank you :)

  • @hope44441
    @hope444417 жыл бұрын

    meet bhai please make some video on lipoprotien metabolism Your videos are amazing literally

  • @Meetpatel-pu6me

    @Meetpatel-pu6me

    7 жыл бұрын

    Gul nawaz bhai, i will not be able to make videos in February but i will make biostat videos before that.

  • @mariagabrielazuritamontano8083
    @mariagabrielazuritamontano8083 Жыл бұрын

    omg thanks i understand finally hehe

  • @meherchahal5632
    @meherchahal56325 жыл бұрын

    Is 2pq = 5000 ? Basically 2q=5000 ?

  • @ahmedhasan1885
    @ahmedhasan18856 жыл бұрын

    the last part about prevelance of AD disease , it equals = 2pq+q2 ( u said 2pq only ) Thanks for ur efforts patel

  • @bhatiarahul18
    @bhatiarahul187 жыл бұрын

    at 3 28 you said prevelance of disease is equal to q2 so in last scenario can 't you start it by q2 is equal to 1/5000 bcz it is prevelance of disease i think you missed some word or i have some misconception

  • @bhatiarahul18

    @bhatiarahul18

    7 жыл бұрын

    taro abhar. anand thayo , spasiba balsoy , brat

  • @Meetpatel-pu6me

    @Meetpatel-pu6me

    7 жыл бұрын

    Bhatia Rahul haha jordar

  • @Tekkenman101
    @Tekkenman1015 жыл бұрын

    For my answer I got .0282 (or .0278) is that right?

  • @noedelafuentejr.9283

    @noedelafuentejr.9283

    5 жыл бұрын

    It's [2][p][q] right so.. [2] [1] [1/70] = 0.0285 thats what I got

  • @320466
    @3204665 жыл бұрын

    Is it 1 in 5000

  • @abhishekmj91
    @abhishekmj916 жыл бұрын

    For AD shouldnt the prevalence be (p^2 + 2pq)?

  • @b4birjupatel

    @b4birjupatel

    5 жыл бұрын

    Exactly. That's what I Thought! So what is the final answer?

  • @komalgirdhari4495
    @komalgirdhari44957 жыл бұрын

    awsom meet patel :) it helped alot but i have bg problem in maths, like i was knowing hw to solve question u had given in last but was unabl t find q value i knew 2pq is 1/5000 nd i hav t find out 2 x 1 x1/? =1/5000 nd that value l b q nd its square l be answe but hel ya i dnt knw maths

  • @Meetpatel-pu6me

    @Meetpatel-pu6me

    7 жыл бұрын

    komal girdhari Anil kumar has mentioned the explanation in the commnets....let me know if you can see that comment or not?

  • @komalgirdhari4495

    @komalgirdhari4495

    7 жыл бұрын

    +Meet patel jus saw it :) thanks alot got tye q value :) bt can u advice me on this maths thimgs coz constantly i have been makin mistakes in such typ question

  • @Meetpatel-pu6me

    @Meetpatel-pu6me

    7 жыл бұрын

    komal girdhari they do not ask tough mathematics. ..there are specific patterns for calculation so keep on practicing and you will master it...also calculation based questions require more attention and thinking..!!

  • @mariumrandhawa1866

    @mariumrandhawa1866

    4 жыл бұрын

    Meet patel where ?

  • @hendalsh2270
    @hendalsh22707 жыл бұрын

    anything for calculating recurrence risk in genetics ! . its causing me headache :(

  • @Meetpatel-pu6me

    @Meetpatel-pu6me

    7 жыл бұрын

    Hend alsh kaplans notes and uworld questions will help...its about practicing more questions

  • @hendalsh2270

    @hendalsh2270

    7 жыл бұрын

    thanks for replying I will try that

  • @Watchmee3
    @Watchmee34 жыл бұрын

    Thank u so much sir fr making every hard concept easy😁

  • @anilk1241
    @anilk12417 жыл бұрын

    For generalisations and the sake of simplicity , all enzyme deficiencies are AR , and all structural protein deficiencies are AD (exceptions apply like CF) . Hereditary spherocytosis is an AD condition . So , prevalence in AD is provided by "2pq" >>> So , 2pq=1/5000. >>>>q = 1/10000 (because p is near to 1). Since homozygous diseased is given by square of q , q2 = 1/100000000

  • @Meetpatel-pu6me

    @Meetpatel-pu6me

    7 жыл бұрын

    Very nice anil kumar 👍🏼

  • @shivangirairai5235

    @shivangirairai5235

    6 жыл бұрын

    👍

  • @leuciekanna320
    @leuciekanna3206 жыл бұрын

    q2=1/5000 ;q=1/70 ....2pq =2(1)(1/70)= 1/35 ....... prevalance of homozy diseased ppl=1/70 plz corrwct me if im wrong :/

  • @robertolinaresduran9477
    @robertolinaresduran94776 жыл бұрын

    I don't understand why we have to multiply 1/500 * 1/2 * 1/2

  • @aliaaalia9758

    @aliaaalia9758

    5 жыл бұрын

    Me2

  • @dr.jaymehta5790

    @dr.jaymehta5790

    4 жыл бұрын

    That's the probability of having children having disease . That's why we have to multiply it with 1/4

  • @MedManiac1
    @MedManiac12 жыл бұрын

    GODSENT

  • @shkokurda2098
    @shkokurda20985 жыл бұрын

    0.0141*2

  • @teri5719
    @teri57197 жыл бұрын

    you saved me lol

  • @estebanespindola5205
    @estebanespindola52054 жыл бұрын

    I love you

  • @reemabdullah9877
    @reemabdullah98775 жыл бұрын

    Is the answer 1/10000

  • @bryanmontes1374
    @bryanmontes13745 жыл бұрын

    Hereditary spherocytosis can behave as AR or AD. If its behave as AR then the answer should be 1/2500 and if you consider it AD then it would be 1/10,000. LOL I guess, let me know if I am correct.

  • @zer0c00I

    @zer0c00I

    5 жыл бұрын

    In first aid, hereditary spherocytosis is under AD. So I calculated the answer to be 1/10,000.

  • @olanipekunayomiposi6108
    @olanipekunayomiposi61084 жыл бұрын

    is the answer 1/100,000,000

  • @Meetpatel-pu6me

    @Meetpatel-pu6me

    4 жыл бұрын

    Yeah that's correct

  • @shivleengill4976
    @shivleengill49764 жыл бұрын

    1/10000?

  • @Meetpatel-pu6me

    @Meetpatel-pu6me

    4 жыл бұрын

    It's 100,000,000. I have given explanation in another video

  • @shivleengill4976

    @shivleengill4976

    4 жыл бұрын

    Do you have biochem notes from step 1? My exams is in April and i am struggling with biochemistry it would be a help ...

  • @Meetpatel-pu6me

    @Meetpatel-pu6me

    4 жыл бұрын

    @@shivleengill4976 Sorry but I don't have it. Use FA, that's the best