I remember watching this video in first year of biology in university... and here I am 4 years later studying for the MCAT. Haha thank you for this. It's the best DNA Replication vids I've come across
Thank you so much for your video, as a college student reviewing for an upcoming test, I really appreciate this video being so well thought out and put together.
@@sciencebygabrawy sorry it took 8 months for the response lol, but I ended up with an A in biology, partly due to your videos. Thank you! (This is my other RU-vid account)
Loved your explanation. I was looking for this topic since long back.Fortunately ,I got a clear picture from your explanation. Please do come with more such topics like Gene expression, regulation, Epigenetics basics, Nutrigenomics..
Thats great great video. Please @marcus also create one video that could link 1.Genes 2.Cells 3.DNA. 4. Chromosomes and 5. Genome. together. like which part is where and what that does?
Thank you so much! This cleared almost everything but i still have a question. My book says before the ligase can glue the okazaki the dna polymerase 1 takes nucleotides from 5’ and add
Hi Mengting, all we know, or what we have observed is that these enzymes appear all along the length of the DNA strand. Helicase, begins to unzip. There really isn’t “quarters,” so to speak. We break the bubble up into quarters only to describe what’s happening inside. Make sense? Does this answer your question?
@@sciencebygabrawy Hi, I still have a following up question. How come it's the same DNA strand but one has a complementary strand that is the leading strand and the other is the fragment?
I liked this explanation so much but I still have some questions: 1)Does each strand have two DNA Polymerases III? (like one for the right and the other for left side) or is it the same DNA Polymerases III on each side that reads (from 3' to 5') and on a strand the synthesis of dna is leading and on the other it isn't? (forgive my mistakes I actually study all of this in french so...) 2) Dosn't the replacement of the rna by dna by the dna polymerase I happen at the same time that the dna Polymerase III makes the other fregment of okazaki and at the same time that the ligase does its work? 3) why didn't you talk about the SSBP ?
Wow John what a great question!! I’d have to say yes. We know the rate at which cells divide. We know that our bodies are roughly one year old since most of our cells are replaced within one year. We could potentially time keep with incredible accuracy- like an atomic clock on a gps satellite! Great question!
