Hardy Weinberg equation- A-level Biology inheritance mathematical model to work out allele frequency

[@ellirosa7370]

Once again, you’ve helped me understand something I didn’t in class, this is incredibly helpful for my exam tomorrow!

[@MissEstruchBiology]

Good luck for your exam 🤞🤞🤞

[@Nik-dc4ti]

Explained it better than my university genetics lecturer. Thankyou!

[@MissEstruchBiology]

Oh wow, thank you!!

[@daisymoulton9735]

The best video on this, thankyou!

[@MissEstruchBiology]

Thank you!!

[@spogmai1148]

This is an excellent video! Thank you so much, you really made the Hardy Weinberg equation easy for me 😁

[@MissEstruchBiology]

ahh excellent😊, glad its made that maths skill easier for you.

[@anjaligyawali3720]

What a great video! Really helpful,Appreciate your work!

[@MissEstruchBiology]

Pleased to hear it helped you 😀

[@achuthanv5017]

This video is so well structured and clear to understand, thank you!

[@MissEstruchBiology]

Glad it was helpful!

[@danmatthews8542]

Miss never have I come away from you videos still unsure. Thankyou!!!!

[@MissEstruchBiology]

wahooo

[@daaragoodluck]

You are a god send. It’s the only explanation!

[@MissEstruchBiology]

aww thank you

[@miashrouder9050]

for the red beetle, how do you know it is both dominant and heterozygous?

[@ameliec7366]

You don't, she just forgot to mention it when writing out the question.

[@justsomeone2001]

Thank you miss, exam tomorrow so this is very helpful ❤

[@MissEstruchBiology]

You're welcome 😊. Good luck!

[@hollieb5193]

Wow! Thank you so much, this helped me SO MUCH!! It’s actually quite easy once you know how haha😄

[@MissEstruchBiology]

So glad it's helped you crack this maths skill! 🙌

[@puremaths2444]

very nice video I am here to say thanks just after my exam. I really pocketed any question from this topic

[@MissEstruchBiology]

You're welcome 😊

[@sejhankacarova2780]

what exam board do you do

[@jeffreysayed8621]

I get it now. You gave a fine explanation.

[@MissEstruchBiology]

Thank you! So glad it helped

[@saff9305]

paper 2 biology is tomorrow and this equation I think will be the death of me

[@Hello-yp8vt]

I don’t get it fml 🤦‍♀️

[@alikazi3792]

What a great video!

[@MissEstruchBiology]

Thank you!

[@seeds8134]

So so helpful thank you so much !

[@MissEstruchBiology]

So glad it helped 😊

[@BodogabrGabr]

Thanks it benfits me well 💞

[@lilypickett274]

Thankyou so much! this is such a helpful video

[@MissEstruchBiology]

Thank you 😊 Really pleased it helped you.

[@Sophie-pg6lg]

Why did you not use the 0.64 information in the second example? How would you know when you can not use this or when you should ?

[@kaigordon9237]

You always want to use the recessive allele when possible

[@Tryingveryhardpls]

Because red is all of heterozygous AND homozygous dominant. Does that make sense?

[@thirshansubaskaran5488]

Thank you

[@MissEstruchBiology]

I hope it helps ☺️

[@regularman4063]

Hi, Does it matter which equation use first ? Also, as we know q=0.0002 , why can't you just do ( p= 1-0.0002 ) from the ( p+q=1 ) formula

[@marco3391]

It depends what the question asks. If they give you an allele frequency (B or b) you would first use p+q = 1. Whereas if they give you a genotype like BB, Bb or bb you would put that into the other equation. Using my example of B and b: p = B q = b p^2 = BB 2pq = Bb q^2 = bb The 0.0002 example was q^2 (or cc genotype) so that’s why she square rooted it first to get to q. Hope that helps

[@autumnnight8622]

How would you use this equation when there is no recessive allele and on only co dominant alleles are present

[@davidmkwizu76]

1:28 miss isn’t the allele frequency how often the allele occurred in the population.

[@Letik3x]

for the second example why did you only the black percentage ??

[@Lavin.]

11:28 how do you know when to square or not the 36%. I hope someone can let me know bc sometimes you have to and sometimes the mark scheme doesnt. thank you

[@zehraylmaz2613]

thank you very much

[@MissEstruchBiology]

You're welcome 😊 Glad it was helpful

[@madyanchoudhury5040]

For the second worked example, are you allowed to just assume that the lower percentage phenotype is caused by a recessive allele? Doesn't it have to be stated?

[@MissEstruchBiology]

Hey, sorry I actually didn't show a previous part of this question in which they stated black was recessive. You wouldn't assume, they would have to tell you or give you information to determine it.

[@FlorenceStott-v3g]

What do you do if alleles are co-dominant? I've just seen a question on it and im stumped.

[@MissEstruchBiology]

hey, for codominance the here's an eg. WW dominant genotype frequency would be p^2 RR dominant genotype frequency would be q^2 RW codominance genotype frequency would be 2pq

[@stedmunds-v4e]

good video

[@MissEstruchBiology]

thank you!

[@brishtytalukder1656]

Hey, did u do any video on blood clotting?

[@MissEstruchBiology]

Hello Sorry, I don't I'm afraid.

[@brishtytalukder1656]

@@MissEstruchBiology 😌 i really love ur notes thank you😊

[@MissEstruchBiology]

@@brishtytalukder1656 Thank you :D

[@Lemurai]

Someone in my class asked our professor about the “Harvey Weinstein” equation 😂😂😂 I never seen an instructor so speechless in the middle of lecture 🤣

[@J-wd3kh]

😂😂😂😂😂😂😂😂😂😂😂