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/bio/ - Biology

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25 Dec 2021Mathchan is launched into public
Catalog Archive

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  No. 29
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This board is for the discussion of biology.


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  No. 25
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>>26 >>27
Hello,

do you ever consider the possibility to simulate evolution during our current computerpower?
The days of Game of Life are loong ago.
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  No. 26
>>25
https://youtu.be/N3tRFayqVtk

Look here for a youtube example
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  No. 27 >>28
>>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?
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  No. 28
>>27
Sure but I mean, would I be cool to talk about stuff like this here?
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  No. 30
test

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  No. 20
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I'm working on a project related to this and would love to compare notes

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  No. 16
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>>19
<1% of humans have autism. If you clone an autistic human, what % chance is there of them having autism?
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  No. 18
nigger
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  No. 19
>>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

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  No. 5
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>>6 >>9 >>11
- 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)

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  No. 7 >>8 >>9

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>>6
- Then why did the testes of humans descended in the first place ? duh huh its because of muh temp. regulation
- Then why didn't the testes of elephants descend ? because of muh aquatic ancestry
- But they left the aquatic ancestry a long time ago for much dryer habitats like deserts
- And as i stated above from that unfindable study, why tf did they develop a counter current mechanism around their testes if heat wasn't their first issue in the water itself as stated here (https://www.publish.csiro.au/rd/pdf/srb03ab59)
- Hippos who have much closer ancestry to aquatics have semi descended testes but they are almost 80% of the time in water so their need for low temp and habitat preference can justify their semi descended testes

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  No. 8 >>9

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>>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
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  No. 9

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>>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)
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  No. 11 >>12
>>5
Why not make the comparison against other large herbivorous mammals that share their terrain like african buffalo instead of humans?
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  No. 12
>>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

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