Chargaff's Rules

Biology Professor (Twitter: @DrWhitneyHolden) explains the discoveries of Erwin Chargaff, known today as Chargaff's Rules, that describe DNA composition in and between species, specifically how DNA varies from species to species and how adenine and thymine create base pairs while cytosine and guanine create base pairs.
Want a PDF of the final white board with all the answers written in? Download FREE STUDY NOTES here: tinyurl.com/BiologyProfessorN...

[@abhinavneoharysvarma8551]

Really helpful, it's 3 am and I've a test tomorrow

[@BiologyProfessor]

Good luck! Here’s a link to my Genetics playlist if it would help.
Genetics by Biology Professor ruclips.net/p/PLjMo-ys5HQIZt7lsSFysHvp9SgW0CyTB8

[@farajkerendian2101]

same

[@annic319]

Hey man how'd your test go last year?

[@abhinavneoharysvarma8551]

@@annic319 It went pretty good

[@emilottephionah3933]

Thank you so much,am in my 1st year of medicine and I was facing challenges with understanding biochemistry but you've made it easy for me.

[@jaserobinson8916]

Thank you for your help! You explained perfectly!

[@--9969]

Hello from Germany
there is almost no German video about this topic thats why I have to watch an english one. It took a while to unterstand everything but I think I got it now.
Thanks for that video it helped me a lot

[@brawlking669]

selbes Problem gehabt lol

[@kofipapa2886]

Hahaha, I hope it is the same in Deutsch.

[@andreaencarnacion3637]

love the video but the muffled mic sucks! but good video very helpful!

[@sampritikundu9546]

Thanks mam, watching it from India.

[@alimamstudying9462]

U explaining is just perfect thank u

[@BiologyProfessor]

Thanks 😊

[@tanveerkhan_217]

Thanks 😌

[@derrickwashington1267]

Does the coefficient of chargaff makes it possible to affirm that two bacteria are genetically distant and is it proportion to the temperature of fusion of DNA?

[@BiologyProfessor]

Yes and yes

[@teecee6655]

Hi what is the explanation for why dna varies between species ?

[@BiologyProfessor]

Mutation and evolution! DNA polymerases that copy DNA sometimes make mistakes, leading to mutations. These mutations, if beneficial, are more likely to be passed on to the next generation. Over millions of years, these inherited differences result in totally different species.

[@teecee6655]

@@BiologyProfessor Thank youuu

[@karanarya7949]

Why is chargaff rule is not applicable for rna.mam

[@BiologyProfessor]

Because RNA is not double stranded. Any complementary base pairing in RNA is within a single strand (see tRNA for instance) rather than between two complementary strands

[@omariqbalhamid280]

RNA doesnt have T nucleotides

[@2ndintelligentWorld]

goodjob thanks

[@DW-2022]

❤️

[@dwaipayandattaroy9801]

How does a crow dna varries from that of a human dna, or are the similarish 😀

[@BiologyProfessor]

The genome of a crow species has been sequenced, but I am not aware of any information about how close it is to human DNA.

[@dwaipayandattaroy9801]

Biology Professor so, you are teaching me What, part of biology ma'am

[@dozzie8986]

@@BiologyProfessor thank you

[@brycemoy19]

Please remake this with a better mic. Holy

[@aiubnabi5707]

Not possible

[@dwaipayandattaroy9801]

How do they do that , where from do they ectract dna , and where is dna resident at, chromosomes, now where does chromosome resides , but seriously I just know testosterone are perhaps not sperm cells , but hormone, are hormones protein and are hormone a source of dna and how does sperm contain dna knowledge , is blood dna same as egg dna