Linkage mapping problem three point cross

[@alexshaffer5235]

The video helped me a lot when studying for a test! However, to calculate the coefficient of coincidence my professor says in the numerator to put the number of observed double crossovers (in this case 40) and in the denominator to multiply the frequency of single crossovers together and then multiply by the number of total offspring to find the predicted (in this case 0.28x0.18x1000 which is 50.4). c=40/50.4 c=0.79365 and I=1-c therefore I=0.20635 or 20.635% interference.

[@banashreepatra9017]

Mind blowing sir,,,, sotti khub vlo kore bujhte perechi❤

[@shomusbiologyofficial]

You're welcome

[@mrinalsahu7991]

Your way of explaination is great sir!!!

[@shomusbiologyofficial]

Thank you so much for appreciating my efforts

[@nainagoel5541]

Am thankfull to you... you are really a good teacher... its really good even for beginners... Thank you so much....

[@shrutichakravarty2875]

This video is so helpful, cleared all my doubts in just 20 minutes. Thank you so much.

[@madhurimabose7216]

#observed double cross over=frequency of 1st point cross over * frequency of 2nd point cross over * total offsprings, i.e.( 0.18 * 0.28)* 1000 = 50.4. #observed double cross over= 18+28=40 # COC=40/50.4=0.8 #I=1-0.8=.2 According to my book.

[@purusharthsharma5957]

madhurima bose my answer matched with yours. This is the write way to solve COC. He did some mistake in calculating COC.

[@malinibhattacharyya8297]

18+28=46 its not 40, i am confused, help me

[@angeldiya788]

2 times observed cross over? Sis you need to edit your comment

[@angeldiya788]

I think here one shuld be expected cross over

[@mkareer1788]

Very well explained thank you Shomu!

[@harrygach]

LIFE SAVER...DIFFERENCE BETWEEN THE D I WAS DESTINED TO MAKE TO A CLEAN A IN MY TEST :) KEEP UP THE GOOD WORK

[@2cool0]

thank you sooooooo much!!!!! that was so helpful Went step by step and didn't miss any info when teaching, awesome job thank you!

[@mzerm575]

Excellent! Thank you! I hope there is a linkage Q on my final exam :)

[@qinchristine7103]

I think there is a mistake. For calculating the COC value, the expected double cross-over value shoud be calculated by (74+66+22+18) and (128+112+22+18)

[@elizabethnsiah8362]

exactly

[@monikaluthra339]

COC should be between 0 to 1 only we are not calculating inference it is interference sir

[@mayukhroy5393]

This video was very helpful, Sir.

[@chetantake1105]

sir,for this problem,COC=79.37%&interferance=20.63%

[@ashleyosorio515]

OMG I really appreciate this, Thank you so much for having taken your time.

[@shomusbiologyofficial]

You're welcome. Glad to hear that you're getting benefit from my lectures

[@zacharypellerin8411]

I'm still confused on how you got the "genetic" map, You just stated that it would be denoted as B V Lg, but you never explained how.

[@monikaluthra339]

@shomu's biology , sir your calculation regarding to expected DCO is incorrect. you need to edit this video

[@omermuhammad809]

Dude your better then my Prof - Thank you very much

[@tumpahazra3486]

Thank u so much sir It's really helpful 👍

[@shomusbiologyofficial]

You're welcome

[@rajendrakc5969]

expected double cross over is the product of two single cross over i.e 0.18*0.28=0.0504 that means 5.04 (but not 3.36 as you mentioned above)

[@kaainatkhann]

Thank you for explaining this well!

[@shomusbiologyofficial]

You're welcome

[@annemaecalamba]

Oh my gosh! Thank you so much for this video! It helped me understand a lot! Be blessed! :)

[@shomusbiologyofficial]

+Anne Mae Calamba thank you. Glad you liked my lectures

[@antara0719]

This video was really helpful 😊

[@snehabasak4113]

Thank you soooo muchhh sir😌🙏🙏

[@shomusbiologyofficial]

You're welcome. Glad to hear that you're getting benefit from my lectures

[@kankanabanerjee7541]

How did you get that "v" as the uncommon one in the double crossover product!!?

[@letsdancewithtista5518]

In COC when we are calculating the single crossover should not we add the double crossovers also?? @shomu's Biology

[@muzamilnazir624]

Good, but the cursor should have been bigger for clear explanation

[@shomusbiologyofficial]

Ok

[@sheefa123]

thanku so much u r very helpful

[@samz2082]

Amazing! Thank you! Excellent !

[@donbeinaacornelius5756]

Nice procedures thanks for uploading

[@shomusbiologyofficial]

You're welcome

[@MB-lt6zc]

this video is really helpfull

[@memeal6328]

Hello there, Can we calcualte the number of the recombinants if we know the value of the RF and the number of the total progeny?

[@oliverho520]

very helpful, thank you very much

[@stephaniegamez2218]

Thanks! Very helpful.

[@malathim1739]

Sir please upload the question of this mapping prblm... It's not visible clearly in presentation

[@SamiulHuda-g9z]

Interference can never be imaginary

[@deepakmalik3746]

Thanks a lot sir

[@shomusbiologyofficial]

You're welcome

[@sharmiladevi9411]

Please sorry, teaching is very nice and good , but board clarity little bit not clear

[@albanaudibert8734]

Loved that video

[@first6digits]

What would you do if one of the genes was unlinked?

[@KingaDB]

thank you! extremely helpful :)

[@wasifislam47]

I think the calculation for COC maybe wrong. I got .79

[@jtg15115]

+Wasif Islam I kept getting the same. Thanks so much. Feels good knowing I didn't mess up

[@chetantake1105]

sir,it is in %

[@shereefafathimath4639]

Got .79

[@nikkicutiie]

Same here. I got 0.79 for the COC and the inference should give you around 0.20 (rounded at 0.21). I'm glad that the equation we were given in class gave me the same answer as you guys. I was skeptical about the negative result he got, as it is logically not possible.

[@jannynaupac8758]

great video!!!!!! Thank you!

[@souravdalapati.6270]

This is a total blunder!!!!! I suggest you should delete this video immediately.Expected DCO is wrong.Observed DCO is wrong.COC is wrong.Just think about the interference (1- 1.19)= -0.19.(Where negative interference in this maths are very very rare. Please don't mind but it is really a big mistake and your channel is the most favourite of all others that is why a big number of people follows you,as i do, so the chance of spreading the mistake is very high! But i love your videos above all.

[@svenjamulder4458]

You can absolutely get a negative inference. That's the beauty of genetics.

[@AsYouAreASMR]

How do you know if it was t v lg or lg v t for the ordering?

[@OneInnerDepth]

You compare the parent arrangement (the most numbered) with the double crossovers (the two least numbered) and you look to find the uncommon one between each parent compared to each DC. The uncommon variable or gene will be your middle gene..

[@shomusbiologyofficial]

right you are

[@malinibhattacharyya8297]

Tell me the coc formula

[@aishwaryaiyer4411]

amazing..! thanx alot

[@priyalahorani1706]

Sirji but the order of the genes should be b_lg_v....

[@ManpreetKaur-wh6rw]

sir this vedio is no much clear..plss sir make more vedio wih more exemple....of three point mapping...i am confuse..

[@susmitasaha-yp7xk]

How to find Constitution of heterozygous parents

[@aminsiddique8667]

Thanks sir

[@shomusbiologyofficial]

You're welcome

[@komalpreet8983]

Uncommon is v and + both ,so why u took only v?

[@shiilovesdogs]

Helpful vid! But isn't it Interference not inference? Lol

[@debangshubanerjee6874]

coc calculation is wrong

[@shereefafathimath4639]

Yes i too think so

[@svenjamulder4458]

It's actually correct. For the observed double cross over you would say 22+18/1000 and then divide this value by 100. You then take the values for the single cross overs without the addition of the double crossovers ie. 66+72/1000 x 128+112/1000. you then multiply the entire sum by 100. If you are getting a different COC it is because you are using the map units with the double cross still in the sum. His answer is correct.

[@MetaDoll]

Thank You!!! :)

[@purusharthsharma5957]

can anyone explain how "bvlg" obtained at #9:44?

[@shivamsharma2646]

Please aap apane videos me vioce to increase kar dijiye or slide ya Ppt use kariye

[@shomusbiologyofficial]

These are old videos. Check new videos

[@kashafseducationalsite363]

calculation about coc is not right. please correct it thanks u

[@abhisheksachdeva6392]

sir aap bhagwan ho

[@shomusbiologyofficial]

Glad to hear that you're getting benefit from my lectures

[@abhisheksachdeva6392]

@@shomusbiologyofficial 🙌🏼🙌🏼

[@aRasigai]

thx

[@3bdul5aled36]

thx :), is that easy ? thanks^10000000000 :)

[@benaiken7548]

My fucking Boi!