Genes, DNA & chromosomes | Heredity & Evolution | Biology | Khan Academy
HTML-код
- Опубликовано: 6 сен 2024
- Let's learn what genes, DNA & chromosomes are
More free lessons & practice -
www.khanacadem...
Khan Academy is a nonprofit organization with the mission of providing free, world-class education for anyone, anywhere. We offer quizzes, questions, instructional videos, and articles on a range of academic subjects, including math, biology, chemistry, physics, history, economics, finance, grammar, preschool learning, and more. We provide teachers with tools and data so they can help their students develop the skills, habits, and mindsets for success in school and beyond. Khan Academy has been translated into dozens of languages, and 15 million people around the globe learn on Khan Academy every month. As a 501(c)(3) nonprofit organization, we would love your help!
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 😊
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
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.
,🧖
Excellent video and tuition. As a curious 78 year old found your explanation very clear and easy to understand. Thankyou.
I am really Lucky to found this underrated channel 🤗..
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
U look so cute in ur childhood ....owwww❤️thnx lot sir for such a great explanation nd u hve got such a soothing nd pleasent voice.....really amazing 👍
I watched all the videos on RUclips of this topic but the only one by whom I understood the concept was you sir thanks a lot lot and lot sir❤️❤️🙏
Thanks sir, this is the best explanation I have ever found. You are absolutely unique at explaining such concepts. Thank a lot 😻😻😻👌👍
The everbest teacher i have ever met
hats off sir
This is the channel who explain everything very beautifully ... 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
Your voice is so cute..😇😇...your teaching is incridible...keep it yup sir😎😎😎😎😊😊😊😊😇😇😇
just wanna thank you by heart. finally, ended up clearing my all doubts. :)
So your name is Mahesh ??? Sir???
THANKS SIR 🙏
Wanna see u live....how many of u support...hit a like
congrats!🎉 100k views🎉🎉
Sir u deserve more than millions of subscriber
Sir you look best just like your teaching
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💀💀🤡
thank you sir , great explanation. i understood everything
You are an amazing teacher. Among the 0.1% of the world, certainly!
Thank you so much for the mirifical video
Great ! Thanks a lot 👍👍😊
Thank you so much sir.. You have helped me a lot
❤️
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!
Thanks it is so complicated in book
Things is making easier🧠
Amazing video! Thank you
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
Sir you are too much cute in your child hood
Thx sir
7:20
10:00
Tysm❤️
Thank u so much sir
Oh man ! You were of a great help for me ..
..🤗🤗🤟thanks a lot.
Thank you! God bless you 💕
Best explanation of this topic 🔥
Nomoskar 🙇
The explanation is superb sir
You are a very good teacher
4:46 Sounded like ठीक है! Lol🤣
Sir r u foreign return or what??..either may b you grown in abroad or may studied their... whatever it will b you hv fabulous teaching skills..your accent yout fluency with transparency in topic...I loved it all..sir can you please share your name
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..
which software do you uze ?
Amazing teaching! the best one I got ! very clear and easy to understand! Thank you!
Sir, you look nice in that photo👌👌👌
Thanks
Super sir , 🤗🤗🤗🤩🤩 plz make other chapters also .... Plz sir plz
Who want to see this sir
mee
I totally concur with your ideas!
Amazing 👏
YEAHHH THIS DUDE SAVED MA LIFE 😂😂
Thanks for biology I’m a teacher
I am not able to express that how amazing you explain
nice
Your voice is very nice 👌 👏
I wonder what app did he use to write and teach?
Me Too🤔🤔
Nice video bro
Soo cute voice
Thank you very much Sir
How cute u r!😊
Very good explaination sir
U are very cute sir
Ha
* 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.
4:00 It's funny cuz we prefer the term pups over dog babies🐶😄
😎
Hlo😎kive
Shergill saab
Thanx a lot sir!!!
❤️
nice vid sir.......realy great
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
First!
Sir from one sperm of father a 23 DNA STANDS will come aa into thier children body? Pls reply
3:13 this part just doesn't sounds right
Hey! Where is RAM..
In computer cpu
@@priyansurout215lol 😂😂😂
Sir please make a video in Hindi
Khan academy India- hindi medium
check out there hindi channel - Khan academy India- hindi
Sir App 10 ki starting mein kyu nhi mile 😩
Hlo
Fruit fly : i am 50 % human
osowa bangtan sonyeondan imbinida lmao
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 %
Hey brother please make your information delivery duration condensed..boring approach of imparting
Bachpan ka...... Bhul nahi jana re 😅
Pramoth op
its the genes man
what is your name sir
ps : you were cute
>3
hi Machane Mallu an alle
sir are you indian ?????
Yesssss
@@rashmisahu7130 ohh...ok
YES
Where is our ram bhaiya
👌 😎🤩🙄😌👴👴👴👴😀
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. 😊
what is gut
Ur alimentary canal is also called as gut
Intestine
😁😁😁😃😃😃😁😁😃😁😁😁😁😁😁
Good Job!! Thanks
Thank you sir
Sir thank you so much