Dominance & segregation laws | Heredity & Evolution | Biology | Khan Academy
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- เผยแพร่เมื่อ 26 ส.ค. 2024
- Let's learn Mendel's law of dominance & segregation
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Sir you had really developed an amazing style of teaching.l am speechless🤐🤐.It was fabulous!!
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@@hansvonmeinstien3660 who asked?
📌• Dominant traits are the traits which express themselves in the generation WHEREAS Recessive traits are those traits which are hidden and can't express themselves in the next generation .
📌• Law of segregation is also known as law of purity of gamates or the law of separation. It states that the alleles are separated to the gametes during meosis , so that the alleles will not get mixed. And always pure gamates are transferred to the offspring.
📌• Phenotypic Ratio of the offsprings - 2:2
Genotypic Ratio - 2:2
@@leviackerman4713 well i guess I am wrong
@@DhirajKumar-zo3mu yes you are
In the class he explained that ratio should be 3:1 how did I get 2:2
@@jozmit6640 we is walking here
Your ratio is wrong
This just calls my education fees a joke.
? I didn't understand
@@ErenMC_ ig the person means the fees they pay is just a joke cause this vid is better despite being free of cost(?)
@@amethystmk yup probably
And i see why he said that LoL
just like ur lost dad
Nope
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Im from Bangladesh..after watching a lot of videos on this chapter i ended up here and Im sure these will be my last videos on genetics cause i got all the answers i was searching for....thank you so much for these amazing lessons... Explanation was really fascinating... Thanks once again🙏❤️
Yeah this is a chapter which you generally can't understand easily ... And i am also here because I wasn't able to understand this topic from other PPL and i got the reason that is visualisation may this help me in my boards finger crossed
Same from bd🇧🇩
Much better than the other videos on you tube ✨
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thanks from my every cell
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From Nepal. It's absolutely amazing to learn from like you sir.
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Very well explained... thank you
Sir thank you alot for helping me.
Study Mandel's cross between two plants with a pair contrasting characters:
RRYY. ×. rryy
Round Yellow. ( Wrinkled Green)
He observed four types of combination in F2 generation. Which of these were new combination?Why do new features which are not present in the parents appear in F2 generation?
Answer plz 🥺
this is extremely helpful - thank you!
Thank u so much sir I was really confused in this chapter, but you explained it beautifully
A Wonderful lesson .......Thank you soo much sir☺️☺️☺️
It is very easy and amazing method to understand this law i am very impressed with it.
The Anwer of 3 is 2:2.
hi ARMY😀💜
Same I have got the Sam ans
Yaa its correct
Khan academy!! The video is fabulous
But I have a question that I am struggling with since a long time
Can anyone please answer me?
My question is- In genotype Tt, the letters Tt collectively represent a single gene or the letter T is a separate gene and letter t is a separate gene?
And what are alleles???
If you know the answer, please help me
Your one reply can clear my doubt🙏
Bro T and t are the two alleles for the charachter of height. They are like 2 varients of a same charachter. Likewise in the case of flowers Chrachter is Flower color and the alleles would be Violet and White i.e. varients of the charachter.
TT, Tt and tt represent genotypes.
Alleles are points on a gene which expresses certain varient of a charachter. Example,lets say we are studying the Charachter of eye color on a gene located on Chromosome 2 then the alleles would be Blue, Green, Black, Brown etc.
@@butimnotsid Got it✌️
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@@oz4959 :)
Love to see that people are willing to help you ......
Selfless help ❤❤❤
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Yah! I can recall the question
1. Dominant traits are those that express themselves even in the presence of an alternative gene whereas recessive traits are those that can't express themselves in the presence of alternative gene
2. It is law in which the genes separate out
3. 3:1 am I right????
Answer for 3rd should be 2:2.
Yes 3rd answer is 2:2
Because, we get the traits like this
Tt,tt,Tt,tt so here we are getting 2 tall traits and 2 short traits
Hence the ratio is 2:2
Hey i think it is 1:1
As in ratio common factor is cancelled.....
@@pradeepdas1640 math's dude
@@suraj_Suraj yeah me tooo got same answer
Sir thank you soo much 😊
Explanation is very good. 😊
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Thank you
fantastic way of teaching
that's really amazing bro, u made it looks so easy❤
Tomorrow is my exam I was worried about this topic very much.Thanks bro
I have 22 year old friend and your way of talking reminds me of her so much..
Thank you so much sir...understood it very well
you'r explanation is rellay really helpful and amazing
U r great sir,u explained in a brilliant way
So clearly explained!!!🤗
Explaination🔥
14:30 maybe BLUE came from F1 Grandparents ??
Bangur cement - sasta nhi sabse achcha
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Dominant traits are those traits which are able to express themselves in heterozygous condition
Recessive traits are the one which can't express themselves in heterozygous condition.
Law of segregation states that during gamete formation, alleles get separated
Ratio of offsprings-1:1
Superb explanation sir
Really very nice 👌 👍 explanation 👌
Wow,, amazing sir🥺🥺🤩🤩
most underrated youtube studying channel
Wonderful!!!
How could someone dislike this! 😘
They need someone to taught them in their respective languages
Ediot
Haters gonna hate it
they're called bots :)
@@prem7508 it is "idiot" Not ediot understand idiot
0:03
Maybe your friend's mom was cheating with his dad 😂😂
Well explained. 🙏🙏
Amazing.. concept fully clears👍👍
Thank you so much ! it was very clear
so what's the difference between the law of segregation and the law of independent assortment?
Heredity is such a complex topic
love ur explanation 🥰👏👏
Tqsm sir
Or your friend is adopted😅😂😂
Wow!
Such an amazing explanation... Really liked it..
Thank you so much sir...
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Been searching this kind of explanation for hour😭 finally😭
Yes yes
Fabulously explained
Thank you Yasmeen ma'am for sharing this video in our class group
Myself Ishpreet Singh Bhatia Class-10D
* dominant traits are the traits which express themselves in a generation whereas recessive traits are hidden and do not express themselves.
* law of segregations states that when a trait is passed into a gamete , it gets separated
*3:1
Literally u save my marks thank 😊 for explaining
beautiful explanation
Thank you so much sir , i was struggling alot in this chapter.
0:01 SO SIMPLE.......HE IS ADOPTED 😂😂😂😂😂😂😂😂
😂😂😂😂😂
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Come on the great teacher 🎉🎉
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He isn't proud of the Indian accent though, he fakes an accent.
Good Job!
I think you have a crush on your beautiful blue-eyed friend man.
(Great vid tho, love it)
Super sir
Very good teching 🎉🎉
Someone help me with third question unable to get the answer
9:18
1:2:1 is a genotypic ratio
3:1 is a phenotypic ratio...
Ans of 3rd question is-2:2
Why taller plant had dominace?
0:10 Seems like Markus is up for some shocking news.
good
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💯
0:03
Excellent❤
whenever he explains, everything goes straightly into my brain
You are teacher
" two alles coding for the same trait seperate during gamete formation " - law of segregation
Tt, tt, Tt,tt- which is phenotype and genotype is 2;2
DOMINANT trait - which expresses itself very strongly
and the other alle which is suppressed by the dominant alle and does not show its characters is called as recessive
Love you sir
12:21 sir i have a doubt.... Here it may have tall trait as rececessive ?means (Tt) but T is recessive? 😢 help
It means the friend's father and mother were brother and sister 😂
You are a legend!
Can you please tell me which application or software you use to create these videos
1:00
0:45
Thanku sir U have great teaching skills
I can't ignore that 'THALL PPHLANTS'😂
Mendal and his PEAS.💀
Thnxxx sir it really help me to understand 🙏🙏🤘🤘
0:39