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/sci/ - Science & Math


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15299834 No.15299834 [Reply] [Original]

in determining tree of life
aligned by Muscle

Mitochondria rose in first animals some 1 billion or more years ago. Ever since there was a mitochondrion in animal cells and it never went away.

Mitochondrion has its own DNA. It is passed only from females to their offspring. While males do infact change the genes of an animal nuclear DNA, males will not effect the mitochondrial DNA.

Mitochondrion stays unchanged even for millions of years. Or it may also be subjected to rapid evolution.

EVENTHOUGH all animals descend from the one original mitochondrion, there is so many different paths that it is hard to say which came from which when comparing only mitochondrion DNA between animal species.

I made one such tree of life. There is only mitochondrion innit and there are some animals which should not be on the tree branches which they now inhabit.

The positioning would turn into more interesting if there was an access to actual nuclear DNA of all these animals but such a thing is not on the internet. Besides modern computers are not capable of processing anything more complex than mitochondral DNA.

>> No.15299839

during last 300 or so million years, insects lost some mitochondrial information while humane ancestors did not (octopus also did not suffer the loss)

however insects also copied a few genes over and over and there was repeating sequences thus insects reaching the same amount of DNA information as human relatives but some genes simply disappeared and others were multiplied

insect and human both have:
-brian
-air breathing apparatus (oxygen)
-agnus
-kidney
-eyes that see colors
-a few insects have a hearing capability
-sense of touch
-sense of smell

hydra vulgaris has none of these

>> No.15299902

>>15299834
Ok
Where are you going with this,?>>15299839

>> No.15299904

>>15299902
I am telling you we need to use older methods in creating tree of life instead of relying on computers since genes have mutated in random ways for hundreds of millions of years, back and forth

for example a flatworm may have same mutation as a human does just by pure luck altough it was billion years ago when humans split from flatworms

so we cannot use one gene to calculate their position in the tree of life without considering a lot of other stuff too

yet biological "research" is published with computer generated trees

>> No.15299909
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15299909

>>15299904
No one worth their salt uses trees of life seriously
Every living species is adapted to it's environment to the best of its ability
That's it
No species is higher or lower than the other
At max they are more flexible and can live in multiple niches

>> No.15299915

>>15299904
Can you show me a tree of life that puts a flatworm next to a human?

>> No.15299922
File: 279 KB, 1280x1280, IMG_20230325_162419_611.jpg [View same] [iqdb] [saucenao] [google]
15299922

>>15299915
Here
Just like the knights of the round table they are all equal

>> No.15299934
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15299934

>>15299915
why not, I can simply generate it on my computer quickly, but its still just one gene that is being used in here (computers cannot handle comparing whole genomes between many organisms to produce super accurate tree)

>> No.15299942
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15299942

parts denoted with asterisk show where human and flatworm gene has identical nucleotide on the same position in gene

>> No.15300007
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15300007

>>15299834
>Mitochondrion has its own DNA. It is passed only from females to their offspring. While males do infact change the genes of an animal nuclear DNA, males will not effect the mitochondrial DNA.
Wrong, chud. People with male assigned genitalia can pass on their mitochondria, too
https://en.m.wikipedia.org/wiki/Paternal_mtDNA_transmission