/sci/ - Science & Math

[Anonymous No.5232263]

What is the evolutionary basis for having multiple genders?

[Anonymous No.5232269]

sexual reproduction as opposed to asexual reproduction

increased genetic variety and mutations over a shorter period of time

[Anonymous No.5232277]

>>5232269
But how did it originate?

[Anonymous No.5232282]

>>5232279

[Anonymous No.5232279]

>>5232277
delicious buttsex

[Anonymous No.5232285]

>>5232277
There is no point in asking that, it is all theories
>inb4 so is gravity
it really is just speculation. One can prepose the most outrageous and far fetched explanation for the observable characteristics of living organisms, and its immune form criticism because as soon as an argument against it is presented you will get "well god didn't do it, you creationist!" even if no mention of intelligent design is brought up. There is no satisfactory answer to your question. sorry.

[Anonymous No.5232286]

>>5232285
Ah, well that sucks.
Oh well.

[Anonymous No.5232289]

>>5232277
It originated to meet the demand of increasing genetic variety and mutations.

[Anonymous No.5232290]

>>5232289
That explains WHY, but not HOW. It's the how I'm interested in.

[Anonymous No.5232294]

>>5232290
It does explain how, think about it.

[Anonymous No.5232295]

>>5232290
That's a false dichotomy.
Mutations happen, if they are favorable, they are selected, if not they are discarded.

[Anonymous No.5232297]

>>5232290
Forgive me, but I just have a hard time wrapping my head around the concept.

I understand mutations. Offspring is born with something different, if it's beneficial to it's survival then it reproduces and passes it along. Simple, you only need one organism to create a change in the species.

So how then does a gender mutation occur? Asexual organism reproduces, one it's offspring is born with sexual reproductive organs, but then it doesn't have a partner to mate with? Wouldn't it be a massively huge improbability that two organisms both mutate to include reproductive systems at the same time?

[Anonymous No.5232303]

OP was clearly saying "gender". I don't get why people talk about biological sex now. Those are entirely different things. Are the posters ITT trolling?

[Anonymous No.5232306]

>>5232295
But thats not how it proceeds. If seed X had a mutation, child X will have the same. But to have gender, seed X needs to have two different mutations, with two different childs. And those childs have to instinctively mate for the mutation to be succesfull.
It's more interesting that almost every living being has gender variety. So every species had the same mutation ?
I wonder If there could be 3 genders.

[Anonymous No.5232313]

>>5232297
>So how then does a gender mutation occur?
A similar fashion to how all mutations occur

>one it's offspring is born with sexual reproductive organs, but then it doesn't have a partner to mate with?
Who says it couldn't have both sexual and asexual mechanisms of reproduction and it couldn't just create its own sexual partner?

[Anonymous No.5232314]

Have a look up on something called anisogamy and it explains about the evolution of two differential gametes

[Anonymous No.5232315]

The presumed evolution of sexed reproduction is the following:
Asexual reroduction
-> recombination (bacterias)
->meiosis
->sexual types +/- (protozoa)
->anisogamy
->sexual genres
->incompatibility types (superior plants)

That is to say, male/female didn't appear right off the bat. At first +/+ or -/- couples were still viable, but not as good as +/- couples. Then they became incompatible.

[Anonymous No.5232312]

>>5232303
OP here.

>mfw

[Anonymous No.5232316]

>>5232306
> 3 genders
Fuck you. Why did you had to put that idea in my head ? Now everything feels so complicated

[Anonymous No.5232318]

>>5232306
>It's more interesting that almost every living being has gender variety. So every species had the same mutation ?
lolwat?
That's because sexual species have the same common ancestor.

[Anonymous No.5232322]

>>5232318
> That's because sexual species have the same common ancestor.
like insects and mammals ?

[Anonymous No.5232323]

>>5232306
>But to have gender, seed X needs to have two different mutations, with two different childs.
It doesn't. You're just assuming. You're just assuming evolution went directly from elementary bacteria to modern life.
There were steps in between.

[Anonymous No.5232327]

>>5232322
Yes.
Did you thing they appeared independently or something?

[Anonymous No.5232330]

>>5232327
If thats the case, the gender mutation must have happened waaay to early in the evolutionary chain.

[Anonymous No.5232332]

>>5232330
Right.
1 billion years ago if I'm not mistaken.

[Anonymous No.5232334]

>>5232332
I wish gender mutation never happened. So we wouldn't be dealing with tfw no gf threads.

[Anonymous No.5232336]

>>5232330
Yes, but at some point even insects and mammals had the same common ancestor as things like plants and fungus.

[Anonymous No.5232345]

Step 1) Single celled creatures reproduce asexually.
Step 2) Adaptive mutations occur but the process is very slow and survival rate is low.
Step 3) A chance mutation occurs which allows for offspring to include genetic material from multiple members of same species. If the offspring is able to survive then it will become the predominant subspecies and outcompete the asexual subspecies.

Fast forward to complex organisms -->

Step 4) Gender roles develop to match the commitments required of the parents. Mothers are vulnerable and require resources to raise offspring. Fathers compliment this role. Mother sexual organs necessary to raise child internally and safe from environment; behaviour is reclusive and protective. Father has protrudence with fast cooldown and energy for many sexual encounters; behaviour is promiscuous and (in cases where offspring needs both guardians to survive,) protective .

[Anonymous No.5232347]

it was probably so that the creatures reproduced asexually with two sexual organs that they grinded together when they wanted to reproduce. then some of them started to have more pronounced organs of one type.. and some of the other.

[Anonymous No.5232360]

>>5232345
Further thought on step 3:

The chances of 2 organisms with such a random mutation bumping into eachother are very large. It is therefore possible that only 1 need possess the mutation to combine genetic material of 2 organisms. Consider that a single celled creature is small enough to bump directly into the genetic material of an asexual member we get at least 2 scenarios:

1) Genetic material is transferred to sexual organism which reproduces normally and offspring features the sexual mechanism
2) Genetic material is transferred instead to the asexual organism but in which the offspring also features a sexual mechanism.

It's possible that gender roles arose at this point. Females adapted to be good at 'receiving genes' and males at 'penetrating'.

[Anonymous No.5232383]

>>5232360
autism mode activate!

[Anonymous No.5232399]

>>5232383
It was never deactivated.