Genes, DNA & chromosomes | Heredity & Evolution | Biology | Khan Academy
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- เผยแพร่เมื่อ 1 ธ.ค. 2024
- Let's learn what genes, DNA & chromosomes are
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Created by Mahesh Shenoy
Look at that small kid who has changed my life ! THANKS LOT SIR
ikr 😂
Ya😂😂😂😭😭😭😘😘😘
Yes
Simp
@@onaisnadeem huh?
DNA : DNA is a thread like structure present inside the nucleus that contains instructions to make an organism (and all its parts incluing all the various cells) and its characteristic features.
Chromosome : Long strands of DNA coiled up in a compact form.
Total chromosomes : 46 chromosomes in total (constituting 23 from male parent and 23 from female parent)
Gene: Specific parts of DNA that contain instructions to make a specific protein.
Variation is the most important advantage of sexual reproduction over asexual.
12:28 Enjoyed the lecture very much 😊
Thanks for the answers .
I know I’m 10 months late but for the 3rd question wouldn’t the answer be 46 chromosomes for non gamete cells and 23 for gamete cells (since if there was 46 in all cells then during reproduction the offspring would get 92 chromosomal pairs)
YOU ARE LITERALLY A SAVIOUR! THESE ARE SO MUCH COMPLICATEDLY WRITTEN IN OUR BOOKS AND YOU JUST EXPLAINED IT IN A FAIRLY UNDERSTANDABLE MANNER IN JUST 12 MIN! THANKS, A LOT, SIR JI
CRYING SCREAMIMG THROWING UP, THABKYOU SIR SO SO MUCH
Excellent video and tuition. As a curious 78 year old found your explanation very clear and easy to understand. Thankyou.
HOMEWORK :-
📌 D.N.A is a chemical molecule which carries traits in coded form. These are found in the nucleus of the cell.
📌 Chromosomes are long thread like coiled up D.N.A. which contains hereditary information in the form of gene.
📌 Human cells have 23 pairs of chromosomes OR total 46 chromosomes.
📌 Genes are the part of chronological which controls a specific biological function.
📌 Main advantages of sexual reproduction over asexual are :-
• In sexual reproduction there are two parents involved , due to this the child got two types of DNA , which makes the offspring unique.
• In sexual reproduction , there are high chances of variation which makes life of the species more existable.
Thank u!!! I was having a hard time finding suitable words to answer those questions.
,🧖
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The everbest teacher i have ever met
hats off sir
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I studied this for months and couldn't understand why one trait dominates the other... But watching this video one day before board exam helped me understand the concept ☺️✨👏👏👏
Hey buddy I'm watching one day before the exam too 💀
@@lightpearl1495lol im watching this in exam hall💀💀🤡
Sir you look best just like your teaching
Oh my god.... I've spent 2 hrs trying to figure out tge difference b/w genes.. Chromosomes.. Dna..and not a single person mentioned that dna is what's spread out into 23 strands which are called chromosomes.... I'm so glad i came across this video!!!!! THANKYOU
hey!!! i m on your website ... I even learn from there ........... & who else on the webste ..like!!!
The app takes so much internet.
Can't adjust video quality
Your brain is so small
just wanna thank you by heart. finally, ended up clearing my all doubts. :)
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Thank you so much!!
How are you so good at Biology and Physics altogether, such an interesting combo of subjects, right?.....cuz usually non med students are good at Phy and Math, and med students at Bio and Chem...lol!
congrats!🎉 100k views🎉🎉
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So your name is Mahesh ??? Sir???
Thank you sir really learn a lot from your lesson
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Nobody:
Me: saw the childhood picture of mahesh sir quickly ran to comment sessions which is not ordinary because I don't come to comment section very often
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THANKS SIR 🙏
Thank you so much sir.. You have helped me a lot
❤️
Thanks it is so complicated in book
Great ! Thanks a lot 👍👍😊
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Nomoskar 🙇
Things is making easier🧠
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mee
You are an amazing teacher. Among the 0.1% of the world, certainly!
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Tysm❤️
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Fruit fly : i am 50 % human
4:46 Sounded like ठीक है! Lol🤣
I totally concur with your ideas!
Thanks
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Mahesh sir
I am not sure but I saw a comment when someone said his name is Mahesh!
1:54 look he said his name: "how to build Mahesh"
His name is Mahesh shenoy..
Your voice is very nice 👌 👏
I am not able to express that how amazing you explain
I wonder what app did he use to write and teach?
Me Too🤔🤔
Nice video bro
First!
7:20
10:00
4:00 It's funny cuz we prefer the term pups over dog babies🐶😄
* dna is the genetic material of an organism. it acts like an instruction manual to create a particular organism. it is found in the nucleus.
*chromosomes are the condensly coiled up versions of dna.
* human cells have 46 total amount of chromosomes
*genes are portions of dna which contain instructions to build a protein.
*sexual reproduction unique organisms are formed( as there as Dna's of mother and father), more number of variations are present which help in survival of species.
How cute u r!😊
now I get why gojo's eyes are blue
Thanx a lot sir!!!
Bachpan ka...... Bhul nahi jana re 😅
Thanks for biology I’m a teacher
Thank you sir
3:55 What will happen if human and dog DNA get mixed up in a creature?
It will become a b!ch
Well you could imagine something but pratically it won't be possible their genomes are different not only thsf it wont make past a single cell
Sir App 10 ki starting mein kyu nhi mile 😩
Hey! Where is RAM..
In computer cpu
@@priyansurout215lol 😂😂😂
U are very cute sir
3:13 this part just doesn't sounds right
❤️
Sir please make a video in Hindi
Khan academy India- hindi medium
check out there hindi channel - Khan academy India- hindi
Ha
nice vid sir.......realy great
Thank you very much Sir
osowa bangtan sonyeondan imbinida lmao
Dude, do you even know what you're sayin?
Are you a BTS ARMY btw?
u said that when there is a colourless pigment eye turns blue due to scattering of light.. then at sunset y wont the blue eyes turn red??
I too want to know
hey!! i does but sometimes..... & also some times the red colour mixes with blue and give you some different colour . that why sunsets are very bueatiful, indeed!!
@@pushkarahir4002 I'm sry I did not get u... I think ur talking about sunsets... My question was bout the eye
@@akshajg6247 oh sorry abou' th't ........ but it will happen same with your eyes. anyway which class are you from..
@Legendary Entertainment sorry this question was asked by my brother he scored 94 %
Very good explaination sir
Sir from one sperm of father a 23 DNA STANDS will come aa into thier children body? Pls reply
Soo cute voice
Ikrr, the reason why come to this channel!
what is your name sir
ps : you were cute
its the genes man
Pramoth op
Hlo
Then, what are chromatin 🙄
Chromatin is the material which is there in a cell when it is not going to divide, like the cell can't just divide in 2 na! So these tangled chromatins become those coiled chromosomes before division
@@Sunisungalaxy Thnq😃but has been 1 year ab achhe s smjh aa gya tha😌mbbs first year right now🤩remembering time when I didn’t know chromatin🥲
@@mbbsguyveer😂abb kahan ho bhaiya
@@AwaamTillTheEnd 2nd year😆
Sexual reproduction makes us UNIQUE WoW. 😊
Hey brother please make your information delivery duration condensed..boring approach of imparting
sir are you indian ?????
Yesssss
@@rashmisahu7130 ohh...ok
YES
>3
hi Machane Mallu an alle
Where is our ram bhaiya
👌 😎🤩🙄😌👴👴👴👴😀
what is gut
Ur alimentary canal is also called as gut
Intestine
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Thank you so much!!
Amazing video! Thank you