@yesinmsadek anti-parallel means the DNA strands run in opposite directions, so the leading strand runs from 5' -> 3' while the lagging strand runs from 3' -> 5'. if the strands were PARALLEL they would both run in the same direction :)
1. I always thought that the replication fork untwines the DNA helix from the begining of the cain, meaning from the first free nucleotides in the begining of the cain. Inversly you have depicted it to untwine the DNA in a kind of bubble like in the case of the RNA transcription. What is the right claim?
You've depicted the leading strand a been oddly. .2
I mean I hearing for the first time that RNA primers are attached to the leading strand. Is it so?
Because DNA polimerase doesn't need any primers since he builds from 5' to 3' which coincides with the structure of the leading strand(3'>5') but does not coincide with the lagging one, in which the need of primers occur.
@kushalaimashkha Homochirality is a disaster for naturalistic origins. All amino acids in proteins are 'LEFT-handed', while all sugars in DNA and RNA, and in the metabolic pathways, are 'RIGHT-handed'. Chirality!
A 50/50 mixture of left- and right-handed forms is called a racemate or racemic mixture!!. Which life can't use!! Its what we see in nature and in labs!
Life never came about by time chance natural processes! IMPOSSIBLE!!!
Topoisomerase?????
Moe11032 1 month ago
What exactly does 'the 2 parent strands are anti-parallel mean'? This sentence is also in my cursus but can't figure out what it means. thanks!
yesinmsadek 3 months ago
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thelightflight 3 months ago
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@yesinmsadek anti-parallel means the DNA strands run in opposite directions, so the leading strand runs from 5' -> 3' while the lagging strand runs from 3' -> 5'. if the strands were PARALLEL they would both run in the same direction :)
thelightflight 3 months ago
@yesinmsadek it means they have opposite directions but are still placed parallel to one an other: 3'-5' and 5'-3' are antiparallel
andrehini 3 months ago
very very nice. :) it doesn't show topoisomerase activity, but other than that, very good and clear presentation! favorited.
biskittins 4 months ago
Fine job.
TiminPhoenix 4 months ago
Have some questions to you:
1. I always thought that the replication fork untwines the DNA helix from the begining of the cain, meaning from the first free nucleotides in the begining of the cain. Inversly you have depicted it to untwine the DNA in a kind of bubble like in the case of the RNA transcription. What is the right claim?
You've depicted the leading strand a been oddly. .2
I mean I hearing for the first time that RNA primers are attached to the leading strand. Is it so?
kushalaimashkha 4 months ago
@kushalaimashkha
Because DNA polimerase doesn't need any primers since he builds from 5' to 3' which coincides with the structure of the leading strand(3'>5') but does not coincide with the lagging one, in which the need of primers occur.
Thanks man
kushalaimashkha 4 months ago
This has been flagged as spam show
@kushalaimashkha Homochirality is a disaster for naturalistic origins. All amino acids in proteins are 'LEFT-handed', while all sugars in DNA and RNA, and in the metabolic pathways, are 'RIGHT-handed'. Chirality!
A 50/50 mixture of left- and right-handed forms is called a racemate or racemic mixture!!. Which life can't use!! Its what we see in nature and in labs!
Life never came about by time chance natural processes! IMPOSSIBLE!!!
5tonyvvvv 3 months ago
muy bueno. (is a very good video) Thanks!
waleishka1 11 months ago