If you’d like to practise the material covered in this video, check out our platform at www.cognitoedu.org - it's totally free, and has been built to make learning and revision as easy as possible. The main features are: - Lessons organised by topic, only the lessons relevant to your specific exam board and tier are shown. - Automatic progress tracking. Progress bars tell you what you’re doing well at, and what you need to spend some time on. - Practise quizzes so you can test your knowledge. You can quiz yourself on any combination of topics you like. - A huge number of fully-hinted questions that take you step-by-step through some of the trickiest calculations & concepts. - A comprehensive bank of past exam papers, organised both by year, and also by topic. Amadeus & Tom

The purple and green mice became really dominant in my understanding.

@nehamjohn6099

3 жыл бұрын

N I C C E

@prim7267

3 жыл бұрын

N I C C C E

@anuragthakur4341

2 жыл бұрын

N I C C C C E

@neolight2922

2 жыл бұрын

@@anuragthakur4341 N I C C C C C E

@ellieevans5251

2 жыл бұрын

N I C C C C C C E

He explains a lesson in 4 min while my teacher takes the whole lesson and best of all is it free and I study alone so no "distraction".

I have been reading open university tutorials on this for ages and felt so confused and you got it in 4 minutes. We are so flipping lucky to have you about!

Thank you so much this video was a life saver! Textbooks rly make no sense sometimes so i was clueless before watching this

Omg.. this is the most informative video ever

Thanks so much! This video really helped me understand what my teacher was talking about in lesson, haha I was so confused this cleared it all up and more! You got yourself another subscriber. :)

Thank you so much, Cleared a lot of confusion!

The way he finished was like he was waiting to finish with this if we understood or not

@junsaung7958

3 ай бұрын

Fr😭🤣

Literally the best teacher, thank you!!

wait so why do mix raced children not have just one of the parent's skin colour but have a mix of it?

@WitheredGurl

4 жыл бұрын

I like how he didn’t answer you yet lol xD

@spiceyblueroyalhoney1225

4 жыл бұрын

@@WitheredGurl maybe he won't answer me because it's been a year.

@weallyplstop3517

4 жыл бұрын

@@spiceyblueroyalhoney1225 bruh mode

@tawfiquemungi4691

4 жыл бұрын

Skin tone is determined by percentage of melanin in the skin cells so i think that it just varies it doesnt work like dominant recessive but usually leans towards one of the two

@amritamallick4895

4 жыл бұрын

That's because human skin colour (phenotype) is controlled by multiple genes, and not just a single dominant allele of a gene. Skin colour in higher animals like humans, is a Polygenic trait.

This was very informative 👍🏼

Best one so far!

thank u that was helpful!!

GOD BLESS YOUR SOUL thank you!

Really helpful, THANK YOU!

2:44 Alice and the wonder mice!

i always know that this guy has my back

veri nais helpd mi alot uit mai test

Hi sir , this video is very helpful . I understood most of it except I had a query at 2:38 , when u said the mouse has to have both alleles for green fur being homozygous recessive to have the green fur characteristic , although what would happen if the mouse had recessive allele for both colours so if it had a recessive allele for purple fur and a recessive allele for green fur , what colour would the fur be then ? Or if the mouse had a dominant alleles for both colours?

@javadshirinov3750

3 жыл бұрын

There would never be two dominant so in this case the purple will always be the dominant and the green recessive. So in another example the eye colour, there is Brown which is dominant so we use - B, and a blue iris which is - b. So there always is one recessive and one dominant feature

@sarahbreant2811

2 жыл бұрын

Well they would just be codominant which basically means that the offspring’s fur will be a mix of purple and green(whatever colour that makes?!), because there isn’t a dominant allele because they both are in this case. I hope that cleared it up :)

@Skinny_dweeb

Жыл бұрын

Sarah is hard waffling, ignore her

Thank you soooo much

1:04 - bookmark for me

2:55, in the diagram, you've written homozygous purple. Question is that whether that is homozygous purple or a homozygous dominant? Colored purple

@zelkaa3839

2 жыл бұрын

the homozygous mouse contains 2 recessives alleles so it will be green anyways because theres no dominace, while the heterozygous mouse has 1 dominant allele which is purple causing it to be purple,

you're the best, thank you so much !!!!!

You are the bestttt!!!😭

Cripes, that was good. I hope it helps me with my Open University foundation course - I'm struggling with the biology.

@t4aha.s

Жыл бұрын

Cripes 💀

Thank You

Didn't you say two alleles of each gene (2 from mother 2 from father), so shoudn't there be 4 different genes. Which of them are dominant and which of them are recessive?

Thank you I have a test tomorrow

@Cognitoedu

3 жыл бұрын

Best of luck!

@mattyABC1

4 ай бұрын

did you do well

@yaut1172

29 күн бұрын

@@mattyABC1 3 years late mate

Very good

its a god damn gamechanger !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

What’s the difference between genome and genotype?

@varunibaiju9926

Жыл бұрын

the genome is the organism's ensemble of genes. The genotype is the individual organism's unique set of all the genes.

Are his videos like, mark scheme specific?

at 2:18 how do you know which is dominamt mouse and which is recessive? would we be told in the question?

@GraceY-ig2cr

Ай бұрын

The dominant allele is always the big letter, the one in capitals. For example CC , or C c. In this re both dominant as the dominant is always expressed

@CT-sn3hx

Ай бұрын

@@GraceY-ig2cr first, thanks for answering my question, also does that mean the dominant alleles will be give to us like in the question "Cc"

@GraceY-ig2cr

Ай бұрын

@@CT-sn3hx the capital letter is always dominant( always expressed)

@CT-sn3hx

Ай бұрын

@@GraceY-ig2cr ohh I see now, thank very much!!

You didn’t talk about the Punnett Square

@mattyABC1

4 ай бұрын

different vid

good vid

Sir, your just great.

Thanks helped so much but I'm still confused How would u know which is dominant and which is recessive

@AnelaEllaEh

Жыл бұрын

It’s like eye colour brown is dominant my dad had blue eyes mum has brown mine turned out brown/hazel

THANKS BRO

thanks

im getting good grades cuz of u

@willhypes

Жыл бұрын

gcses are soon bro

Simple and great explanation! I have just SUBSCRIBED AND LIKED your VIDEOS! Thank you!

@Cognitoedu

2 жыл бұрын

THANKYOU very much!! 😊

Thanks

I hate people who dislike

literally saved me tqsm 🕺

0:20

genetics is the easiest topic but conf sometimes

Lmao hi mr madden's class my wallpaper is nft collection (dont screenshot+ratio+cope)

i... dont understand....

@qt_s

3 жыл бұрын

pls help

@hamzie1010

3 жыл бұрын

1) Alleles are different versions of the same gene. Alleles codes for a particular type of protein, however, it copies the protein structure of a particular gene. Different type of proteins with the same structures involve a different type of genes to code those proteins. We call those different genes alleles. In other words, alleles are different versions of the same gene. And because we have 2 copies of each gene (one from our mother and one from our father), we have 2 types of alleles. Remember how I said that these alleles code proteins? Well, if those 2 alleles are different, we will say that we are heterozygous. If they are the same, we will say we are homozygous. However, with heterozygous people with alleles which are different, one allele will be DOMINANT and the other will be RECESSIVE meaning the dominant one will always be expressed (carried out). In homozygous, both alleles will be expressed as both are the same. Genotypes are the sum of all alleles (all the collection of alleles), but phenotype if the same characteristics that are displayed, even if they have different genotypes. I know, it's tough learning this stuff, but delve deep and research. You'll get there :)

@qt_s

3 жыл бұрын

@@hamzie1010 omg thank you so muchhh! You have no idea how long I've been trying to learn this stuff and this really helped! Thanks :)

@hprivate9114

3 жыл бұрын

@@hamzie1010 do you know what exam board these videos are based on or if their just all boards

@hamzie1010

3 жыл бұрын

@@hprivate9114 My exam board is AQA and it contains all the things in the video. If you're doing AQA biology, you will probably need to learn this. On some of the videos, the description states whether it's a specific exam board or not. I hope that helps.

Ily

Nicce

I love you

no

i dont get it i'm only in year 8 this seems like GCSE

@FarmYardGaming

3 жыл бұрын

I'm in Year 11, so... yup, seems so.

@ibbayallay

3 жыл бұрын

@@FarmYardGaming lol

@srutea

2 жыл бұрын

this is a gcse biology video tho-

@Itz_glori

4 ай бұрын

Well you'll be doing your GCSEs soon so it might be helpful now

@Dingos.podcasts

26 күн бұрын

I'm in grade 7 bro I'm cooked

I have a question? I understand how it works with woman+man, but how does it work for man+man or woman+woman? I am so confused

Ok now the last part I did not understand

mwah

@lmd99

Жыл бұрын

Loll

baskemtball

i disliked for no reason.... good vid though lmao