Sciencelovah
Registered Senior Member
Edit: see post #2 if this one is confusing.
I don't know if this has this been discussed here and I also don't know how
exactly to formulate this question correctly. Anyway..
In my understanding, according to evolution theory, we are all evolved from
simpler life form. But how does sex differentiation between male and female
developed? Why today in almost all kind of species (except hermaphrodite
or asexual type), for every male species there is the female species?
Let say the evolution path was like this:
species A ---> species B ----> ................. ----> human
Each species consist of male and female. In which stage did the male and
female differentiation developed?
Assuming the male exist earlier before the female, was it like this (scenario 1):
----------------------------------------------------------------------
Note: you can skip this first scenario if this is confusing.
male A ---> female A, male B (male of species B evolved from male of species A; female of species A also evolved from male of species A)
male B ---> female B, male C
male C ---> female C, male D
etc until:
male XYZ ---> human male ---> human female
----------------------------------------------------------------------
Or was it like this (scenario 2):
male A ---> male B ---> male C ----> ................... human male
female A ---> female B ---> female C ----> ........... human female
:shrug:
I don't know if this has this been discussed here and I also don't know how
exactly to formulate this question correctly. Anyway..
In my understanding, according to evolution theory, we are all evolved from
simpler life form. But how does sex differentiation between male and female
developed? Why today in almost all kind of species (except hermaphrodite
or asexual type), for every male species there is the female species?
Let say the evolution path was like this:
species A ---> species B ----> ................. ----> human
Each species consist of male and female. In which stage did the male and
female differentiation developed?
Assuming the male exist earlier before the female, was it like this (scenario 1):
----------------------------------------------------------------------
Note: you can skip this first scenario if this is confusing.
male A ---> female A, male B (male of species B evolved from male of species A; female of species A also evolved from male of species A)
male B ---> female B, male C
male C ---> female C, male D
etc until:
male XYZ ---> human male ---> human female
----------------------------------------------------------------------
Or was it like this (scenario 2):
male A ---> male B ---> male C ----> ................... human male
female A ---> female B ---> female C ----> ........... human female
:shrug:
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