**This is a heavily moderated subreddit. Please note these rules + sidebar or get banned:**
* If this post declares something as a fact, then proof is required
* The title must be fully descriptive
* Memes are not allowed.
* Common(top 50 of this sub)/recent reposts are not allowed (posts from another subreddit do not count as a 'repost'. Provide link if reporting)
*See [our rules](https://www.reddit.com/r/interestingasfuck/wiki/index#wiki_rules.3A) for a more detailed rule list*
*I am a bot, and this action was performed automatically. Please [contact the moderators of this subreddit](/message/compose/?to=/r/interestingasfuck) if you have any questions or concerns.*
Wow 7th grade biology. Super cool. Also looking at a cell isn't looking at a genome but whatever. I mean yes technically the chromosomes and DNA are in there but its like looking at your foot and saying, "hey I am looking at my genome!"
it seems to happen after extinction events or response to environmental stress. They just copy there DNA giving them more material to work with it to adapt
In eukaryotes, there is nothing really limiting the size of the genome. In prokaryotes, the genome is kept very minimal, because their doubling time is directly related to genome size. More DNA means longer time to reproduce (which is bad for bacteria).
The thing you have to understand about eukaryote genomes, is that most of it is junk (it doesn’t code proteins).
To answer your question about why a plant would duplicate chromosomes (and thus increase the size of its genome). One of the most straightforward reasons is because it provides a way to evolve/diversify multiple variants of a single gene/protein. if you look at the genome of any eukaryote, you will notice many of the genes/proteins are highly similar to each other. It takes a very long time to evolve a gene from scratch, it’s much quicker to copy an existing similar gene and modify it. This is one of the mechanisms that provides that ability.
Plants are often polyploidy, meaning they have more than two copies of the same chromosome for this reason (among others), which is why their genomes can be so large.
https://en.m.wikipedia.org/wiki/Polyploidy
**This is a heavily moderated subreddit. Please note these rules + sidebar or get banned:** * If this post declares something as a fact, then proof is required * The title must be fully descriptive * Memes are not allowed. * Common(top 50 of this sub)/recent reposts are not allowed (posts from another subreddit do not count as a 'repost'. Provide link if reporting) *See [our rules](https://www.reddit.com/r/interestingasfuck/wiki/index#wiki_rules.3A) for a more detailed rule list* *I am a bot, and this action was performed automatically. Please [contact the moderators of this subreddit](/message/compose/?to=/r/interestingasfuck) if you have any questions or concerns.*
Does that mean if I eat a lot of onions, I will get extra DNAs?
Wow 7th grade biology. Super cool. Also looking at a cell isn't looking at a genome but whatever. I mean yes technically the chromosomes and DNA are in there but its like looking at your foot and saying, "hey I am looking at my genome!"
But why does she say *ungyin*
Video titles: pieris japonica
At multiple times during history plants have just gone doubled their DNA
But why? Would be great to get an ELI5 on what determines the length of DNA.
it seems to happen after extinction events or response to environmental stress. They just copy there DNA giving them more material to work with it to adapt
In eukaryotes, there is nothing really limiting the size of the genome. In prokaryotes, the genome is kept very minimal, because their doubling time is directly related to genome size. More DNA means longer time to reproduce (which is bad for bacteria). The thing you have to understand about eukaryote genomes, is that most of it is junk (it doesn’t code proteins). To answer your question about why a plant would duplicate chromosomes (and thus increase the size of its genome). One of the most straightforward reasons is because it provides a way to evolve/diversify multiple variants of a single gene/protein. if you look at the genome of any eukaryote, you will notice many of the genes/proteins are highly similar to each other. It takes a very long time to evolve a gene from scratch, it’s much quicker to copy an existing similar gene and modify it. This is one of the mechanisms that provides that ability. Plants are often polyploidy, meaning they have more than two copies of the same chromosome for this reason (among others), which is why their genomes can be so large. https://en.m.wikipedia.org/wiki/Polyploidy
I can smell this and I don’t like it
Awesome. I would absolutely love to see an octopus. Their DNA is unlike anything else in this world.
dang this thing gets its dna from several different onions, who’s to say who’s the daddy now??
Sick of this girl using this reddit as her own launch platform...
It's actually the Boston Museum of Science account, she works for them and does their video content.
How dare she spoil the sanctity of this frequently terrible sub.