nCr = n!/r!(n-r)! Which is n factorial divided by r factorial multiplied by (n-r) factorial. eg: n=3 then n! = 3! = 3*2*1 = 6 Therefore 7C2 means n=7 and r=2 So we can calculate it as 7C2 = 7!/ 2! (7-2)! = 7*6*5*4*3*2*1 / 2*1 (5)! =7*6*5! / 2 * 5! =42 / 2 = 21 Note; 5! got canceled as it was in both numerator and denominator as we see in the numerator 5*4*3*2*1 = 5!
Sir agr anaphase one me primary non disjunction ho jaay to kia phir anaphase two me secondary non disjunction occur ho gi ya process of division will stop at anaphase?
Im ready to take plus subscription if u complete csir 90% sylubss as u teach each and every comcept in very detailed way. Inshalah ur channel will grow like fire
@@thenileshsoni no sir. U are giving ur time for making these lectures u read differnt books and other literature so that we can understand in much better way. U have family and responsibilities still u manage time for uploading lectures for us. We are highly indebted to u.
58:56 is case me jab Normal × abnormal I ll I l I l Result ➡ lll Il Il Trisomy condn( 2n+1 ) Same parents Normal × abnormal gamete I 0 I l I l Result l Il Il Monosomy (2n-1) Sir same parents ke progenies me monosomy and trisomy conditions possible hogi na plzz reply.??????
@@thenileshsoni Sir if possible plz make a detail video lecture on fine structure of gene.I have studied it in genetics by ps verma but the concept to difficult to understand.plz consider
I have never seen such a great teacher for genetics before... Lots of love🥰💞 ( From Pakistan ❤ )
Wow amazing teaching strategies youtube par first time thank you so much sir ❤❤❤👍👍👍👍👍👍👌👌👌👌
Share the channel with your friends
@@thenileshsoni okay sir
Not short lecture like everyone else...all concept clear...thank you sir...
Best explanation 😊
Thnk you so much for informative series...
Ur most intelligent teacher on earth ur really gym u teach us with full emergy and very deeply
How to use nCr formula? how are we getting 7C2 = 21? Kindly explain sir.
nCr = n!/r!(n-r)!
Which is n factorial divided by r factorial multiplied by (n-r) factorial.
eg: n=3 then n! = 3! = 3*2*1 = 6
Therefore 7C2 means n=7 and r=2
So we can calculate it as
7C2 = 7!/ 2! (7-2)!
= 7*6*5*4*3*2*1 / 2*1 (5)!
=7*6*5! / 2 * 5!
=42 / 2
= 21
Note; 5! got canceled as it was in both numerator and denominator as we see in the numerator 5*4*3*2*1 = 5!
nCr= 7C2= 7.6/2= 42/2=21
You should revise Permutation and Combination
The way sir said ... Sochna bhi Mtt ..
Mtlb khtam 😂😂 1:09:54 😅😅
Best lecture as always, thank you sir 😊
Missing jodhpur lectures day ,,,,,, chaliye suruvat karte hai…….from Kailash Maharashtra
Thanks a lot sir for your great support
Thank You Sir
After one year mene dobara pura video dekha
Very clear explanation
Amazing.. No words to say.. Really really wondeful😍😍... If i want to be a teacher i will try to be like u
double monosomy possible in wheat are 210 (2n=42)
Awesome lecture ever😇
Thank you so much sir.
Deeply explain every lecture.
Thanks for watching. Our evolution series is also running. Do watch
Ok sir.
Phli bar class li such me bhut achhe se smjhaya h ...sir kuch topics rpsc first grade bhi krwa do na detail se
Thankyou very much...no wards🎉🎉🎉
Wheat Double monosomy
2n = 42
n. = 21
Pair = 7
n. = 7 pairs
r = 2
7×6×5×4×3×2×1÷ 2×1× 5×4×3×2×1
21 monosomy
Thank you.
GREAT ANALYSIS SIR 👍
kya bhadiya padhate ho aap sir🙏👍
Thanku sir 🌺🌻🌹🌷🙏
Sir aap blessing hai🥺🥺
GOD bless You
Sir agr anaphase one me primary non disjunction ho jaay to kia phir anaphase two me secondary non disjunction occur ho gi ya process of division will stop at anaphase?
Thank you very much
Very nice 👍 explaination
thankq so much sir
next all molecular marker and all biotechnology tool and techniques and QTL and mapping
Sir set k liye practise book suggest krdo
45:00 Sir in wheat double monosomy
No. of pairs = 7
Double monosomy = 21 hoga na
Yes
Thanks sir
Thankuuu sir
Thank you Sir
Im ready to take plus subscription if u complete csir 90% sylubss as u teach each and every comcept in very detailed way. Inshalah ur channel will grow like fire
I'll teach everything free of cost
@@thenileshsoni no sir. U are giving ur time for making these lectures u read differnt books and other literature so that we can understand in much better way. U have family and responsibilities still u manage time for uploading lectures for us. We are highly indebted to u.
God Bless You.... Enjoy
Nice sir
58:56 is case me jab
Normal × abnormal
I ll
I l
I l
Result ➡ lll
Il
Il
Trisomy condn( 2n+1 )
Same parents
Normal × abnormal gamete
I 0
I l
I l
Result l
Il
Il
Monosomy (2n-1)
Sir same parents ke progenies me monosomy and trisomy conditions possible hogi na plzz reply.??????
Ho sakti hai but it's a very unusual and very very very rare
Thank you so much sir 🙏🙏
Tqq sir
Good. Afternoon sir.
Please one. Question is.
What do u mean. By. Translocation give. Cytological effects and. Exaplin it's. Significance
Please provide me. Correct answer please sir. G
Sir please cover molecular markers also.🙏🙏request
Good evening sir
A great explanation.. my all doubts are clear after seen this video.. thanku sir🫡
Sir ye ncr wala smj ni aaya ki 21 kese aaye agr n= 7 h or r=2 h plzz tell me
Watching your lectures,I think you have the x factor.You have your own way of teaching. You are without parallel.
Hahaha esa kuch nahi
@@thenileshsoni Sir if possible plz make a detail video lecture on fine structure of gene.I have studied it in genetics by ps verma but the concept to difficult to understand.plz consider
Sir method of biology series padha de plssssssssssssss
Sir sath me example questions bhi le plssssssssssssss.🙏
Sir lesson 22 in not added
Its not there in the genetics playlist. Just write "structural changes by Nilesh Soni" in the search bar. You will find it as a seperate video.
@@sanjanapatra5040 yes true
Sir kindly make video on cell cycle ( meiosis & mitosis) ❤😊
Wheat Double monosomy.
2n = 42
n = 6 pair
Ans = 15 double monosomy
.. Sir wrong hai ya right .. pls reply me ..
Bina chromosome ke cell kaise banegi n=0
Good evening sir 🙏
In wheat 15 types of double monosomy seen
45:00 Sir in wheat double monosomy
No. of pairs = 7
Double monosomy = 21 hoga na
🤔🤔
🔥♥️🙏🙏🙏🙏🙏🙏
N= 7 and r= 6
Answer is 5040
Correct ya wrong sir answer me sir
Sir ab aapki tabiyat kesi hai
Better hai
Sir wheat ke liye double monosomy...
N= 21. r = 2
So. Double monosomy = 210
Sir correct or not confusion Hai please ..🙏
Wrong.
n = 7
OK sir thank u.👍
Sir Euploidy ki spelling theek kr lo
Are sorry, and thank you so much
@@thenileshsoni Sir mai aapke genetics ke lectures dekh rha hu bohot achhe se samjhaya aapne , thanks
Good evening sir 🙏
Good evening sir