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PUT YOUR BEARD IN MY MOUTH
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@owlyfisher
thought autocomplete would take me to outlook dot com not realising id forgotten the T before i pressed enter. However was very much pleased at what it took me to instead. I think I don't want to see my emails now. I think I will stay with the oul.
love reading lists of old timey baseball player names. these guys both died of typhoid
good team name, good cause of death
come on man.
fuckkk dude just PLEASEEEE let me look back in anger. PLEASEEE come on man come on just once okay just let me look back in anger once…
My vet: okay, you are not allowed to room any of my last 3 appointments. They are all wellness exams, I want to leave on time today, and I don't want you discovering unintentional weight loss on them
Me: *cackling* that's fair
Her last appointments all no-showed XD
Extremely irritating but hilarious in context
vacation babies #2
this girl was showing all the signs of being a secret mermaid so i pushed her into the pool and she turned into a forty foot long mosasaurus which is tbh way cooler
not really sure how to get her out though
for those of you asking why i pushed her into the pool in the first place: i work for a duplicitous small town aquarium and i'm trying to kidnap mermaids to jump through hoops and shit to entertain tourists and make money. fucking obviously. now that i know she's actually a mosasaurus though i Have fallen in pure-hearted love with her
my tooth looking at me after it got pulled
Uncharismatic Fact of the Day
Who needs chromosomes? Certainly not the Indian muntjac! Indian muntjac deer have the lowest chromosome count of any mammal, with 6 in females and 7 in males. That's fewer chromosomes than a fruit fly!
(Image: An Indian muntjac (Muntiacus muntjak) by Charles Currin)
first of all, what hell, second, why do males and females have different numbers??
While I can't answer your first question, the answer to the second is that the males technically have 1 X and 2 Y chromosomes- Y1 and Y2! Here's a really interesting article that talks about it a bit more, as well as the evolutionary implications!
Also, if any other geneticists would like to, please feel free to chime in here- my area of expertise generally stops at anything smaller than a magnifying glass.
Okay so I read it (and if evolution is ur thing definitely give it a read)
Before I start, 2 second crash course of information u need to understand this:
- Chromosomes are structures of dna that the body uses to store genetic information.
- i really enjoy genetics
Alright, so basically the number of chromosomes don't 100% tell you how much dna is there is bc they can be different sizes. In the case of the Muntjac, different chromosomes combined to put the dna together and ended up reducing the amount of chromosomes more than other mammals. (For reference humans have 46 —23 pairs and no extras. That's much more common). They took genetic duck tape and stuck the dna together.
It's not a bad thing that they have so few chromsomes. Think of it like 3 330 page books instead of 20 50 page books. Kind of a big book but it's the same number of pages. They have the genes they need.
Now the way that they got weird chromosomes is a little more complicated.
The thing about the muntjac is that in those chromosomes combining the dna got a little weird. There's no longer a stand alone x chromosome which is the chromosome that typically tells us it is "female" in mammals when they have 2 (XX). Instead, that chromosome got tacked on with genetic gorilla glue to another chromosome and the animal's dna was all "oh sure that works" and just kind of let it happen. Muntjac females are not XX, instead they're "normal chromosome + x" x2 (or 3X+3X — 3 being the number of the chromosome that has x tacked on).
The problem with this, and the reason that male muntjacs have 7 chromosomes is because of the y-chromosome. Several million years ago when the dna combined, the y chromosome didn't. The y-chromosome is the chromosome that generally denotes "male" when it is present (XY). An important detail here is that males also have an X chromosome. Male muntjacs, however, are not (strictly speaking) XY.
When animals reproduce, they pass on eggs from females and sperm from males. When the body makes these cells, you get half your dna from mom and half your dna from dad. In humans, females always pass on the x chromosome and males can pass x or y because they have both.
Human males only have 1 X chromosome. So do male muntjacs but do you remember the x chromosome got genetically glued to a normal chromosome? Yeah the muntjac needs the normal one, so some MORE genetic tomfoolery and gorilla gluing and stuff happened.
So now we have:
- Normal chromosome + X
- Normal Chromosome + Some kind of messed up dna that still kinda works but doesnt match normal chromosome+X
And
- Y chromosome
The big thing that happens here, and im simplifying quite a bit, but the big thing that happens is because the normal chromosome that got messed up doesnt match the normal + X, it leaves a bunch of empty space for the y chromosome to tag along.
And male muntjacs pass down the messed up chromosome and the y chromosome because the dna did PEMDAS wrong twice, made 2 mistakes that somehow canceled out and ended up with a functional deer species that has less dna that any other known mammal and males with 7 chromosomes. Truly the epitome of evolution's slogan of "eh good enough"
This is cool for a few reasons:
1. Science nerd brain enrichment
2. The Messed up chromosome actually gives us a lot of information on what the y chromosome might have looked like millions of years ago (the y chromosome has been slowly shrinking for millions of years because of something called Mueller's ratchet which is a different essay altogether)
3. This is a really clear example of genetic flexibility and the long-term viability of non-typical chromosomal combinations
4. Probably more stuff but Im not deep enough down this rabbit hole to know that yet (wish me luck Im definitely opening at least 20 articles about this)
Anyway, that's how this particular deer can have so few chromosomes and also an extra chromosomes in males!
Thank you so much for breaking this down! Genetics is so weird, and definitely not my forte lol
reblog this and put in the tags something you watched that terrified you as a child. i was so scared of the hot sauce in spongebob that i refused to be in the room when it was on
had this precise exchange with my father the other week
It’s always funny when people make the argument that children shouldn’t have access to some media because “it will give them nightmares” like I hate to tell you this but children can have nightmares all by themselves. I had recurring childhood nightmares about the washing machine
I had a recurring nightmare that cookie monster was trying to eat me. He always found me no matter how hard I tried to hide in the dream.
which way is up?
x axis, positive
x axis, negative
y axis, positive
y axis, negative
z axis, positive
z axis, negative
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why are so many people saying y+ for up is "from minecraft" or "minecraft's fault"? that's demonstrably historically false, minecraft didn't invent or popularize that convention
It's one of several things that popularized the convention, and likely the one most people would think of first?
To clarify: Modern education is such that I think a lot of people will have entirely forgotten about Cartesian coordinates and that part of math class by the time you ask them this question, but will not have forgotten about Minecraft. Especially when adding a third axis of discussion divorces things from the 2D representations people learned in school.
which of these two things did you, specifically, when seeing the question at the start of this post, think of?
I didn't read the question at the start of this post but I want to click smth
I considered both minecraft and 2D cartesian coordinates
I considered minecraft but not 2D cartesian coordinates
I considered 2D cartesian coordinates but not minecraft
I did not consider 2D cartesian coordinates or minecraft
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fucking idiot
