[ home ] [ math / cs / ai / phy / as / chem / bio / geo ] [ civ / aero / mech / ee / hdl / os / dev / web / app / sys / net / sec ] [ med / fin / psy / soc / his / lit / lin / phi / arch ] [ off / vg / jp / 2hu / tc / ts / adv / hr / meta / tex ] [ chat ] [ wiki ]

/bio/ - Biology


Name
Email
Subject
Comment
Verification
Instructions:
  • Press the Get Captcha button to get a new captcha
  • Find the correct answer and type the key in TYPE CAPTCHA HERE
  • Press the Publish button to make a post
  • Incorrect answer to the captcha will result in an immediate ban.
File
Password (For file deletion.)

25 Dec 2021Mathchan is launched into public


File: bio_sticky.jpg ( 986.81 KB , 3072x2304 , 1709216450280.jpg )

Image
This board is for the discussion of biology.



File: 1654637225401.jpg ( 8.77 KB , 240x240 , 1663577215155.jpg )

Image
<1% of humans have autism. If you clone an autistic human, what % chance is there of them having autism?
>>
nigger
>>
>>16
Depends. Even if we assume autism is genetic, the gene could be epigenetically silenced.
If it becomes an environment and gene sharing effect, then it's even worse. I don't know of a model to calculate that.

Sorry, Pepe the Cat
>>
I am autistic, I feel this is not genetical. as in, it's not just genetical. And if it's illness, then it is kind of eugenics. Because the way people think isn't illness, if it was it'd be on new level of the genocidist. It is very fallacious to assume that because someone has ability to concentrate, it is genetical. Genetical illness.
what?
There are illnesses from viruses. there are illnesses from bacteria or cancer
but what the hell is genetical mental illness that has no relevant records but some pseudo psychology nonsense?

For eons, philosophers and therapists both were hacks who milked money from others. Including about autism which is extremely abstract.

If going by solely the trait of inability to concentrate, there are so many different mental disorders that can be recalled which makes all of this defining sketchy. At the end it is more about whether individiual fits in politically or can sustain himself, whether he has family, whether no one cares, whether you have relevance to the community, these things define whether you're autistic or not.
>>
Sexual reproduction is important, without any care it cannot be taken unseriously. It might affect offspring greatly, without randomness factor or what.

Genetics get all messed up, as they bopth have different functions. Unhappy marriage, for example, might create autim.
That's what I think.


File: Creatures.PNG ( 264.1 KB , 520x520 , 1706633293774.png )

Image
Hello,

do you ever consider the possibility to simulate evolution during our current computerpower?
The days of Game of Life are loong ago.
>>
>>25
https://youtu.be/N3tRFayqVtk

Look here for a youtube example
>>
>>25
I mean doesn't this already happen? There's plenty of examples on youtube with simulations and different models/parameters of the simulation no?
>>
>>27
Sure but I mean, would I be cool to talk about stuff like this here?
>>
test
>>
>>25
there are definitely shortcuts there.
You don't need to waste all compuiting power.
We already have computers that can produce molecule structures on the screen and save them, I think it should be possible to follow a few patterns.

What's important the patterns have to be related to the core rule of thermodynamics.


File: 1657862420163.png ( 105.26 KB , 372x403 , 1658727238634.png )

Image
- It is a well known fact that the main reason why testes in humans and most of the animals descend is to regulate the temperature of testes
- The functionality of sperms in temperature more than or equal to body is greatly reduced, the efficiency of sperms is so drastically reduced that artificial heating of testes is also been researched as a possible contraceptive methods
- Testes usually descend in the 7th - 8th month of gestation period due to the major influence of androgens (T) in the fetus, the condition in which the testes do not descend is known as "Cryptorchidism" which majorly affects the fertility of an individual

But, this behavior is not observed in mammals such as elephants, dolphins and whales
The case of aquatic mammals can be possibly ignored due to the fact that they live underwater hence they don't have to care much about the temperature regulation of their testes but what about elephants (https://www.publish.csiro.au/rd/pdf/srb03ab59)

(1/3)
2 posts and 2 image replies omitted. Click here to view.
>>

File: 1657864026241s.jpg ( 2.38 KB , 95x125 , 1658727360825.jpg )

Image
>>7
+ If we ignore the affects of temperature on fertility of an organism
1) Is there any evolutionary advantage / disadvantage of descended testes or presence of a scrotal sac ?
2) Is there any evolutionary advantage / disadvantage of non descended testes or absence of a scrotal sac ?

only one i can think of is that descended testes in scrotums can be easily damaged in some accident and the person can immediately lose his biological rights to being a father
>>

File: IMG20211231164027.jpg ( 1.39 MB , 4000x3000 , 1658727496972.jpg )

Image
>>5
>>6
>>7
>>8
i made this thread on /sci/ but got really vague and bs answers so i would like to ask Mchan's opinion on this

thread -->(https://warosu.org/sci/thread/S14661729#p14663812)
>>
>>5
Why not make the comparison against other large herbivorous mammals that share their terrain like african buffalo instead of humans?
>>
>>11
i took humans just for the sake of it and the difference between the morphology and physiology of buffalo testes and human testes is not that much so taking a buffalo won't be a bad idea but at the same time choosing humans also doesn't disapprove my arguments
>>
Anon! Post your testes and we'll see


File: 1681563487684022.jpg ( 171.09 KB , 945x609 , 1681731001967.jpg )

Image
I'm working on a project related to this and would love to compare notes