How did different genders evolve ?

Question

If weve evolved then somewhere a cell had to somehow evolve into 2 different genders

Answer 1

Gender is cultural.  Biological evolutionary principles control physical s*x traits.  Cultural gender systems decide how those variations in the physical sexes are divided up into 2, 3, 4 or more categories and then what behaviors are appropriate or at least marginally acceptable for each category.  Both aspects of gender are subject to cultural change based on changing attitudes, political and power dynamics, changing means of acquiring food (or money for food and other things), etc.  Most anything that can change a culture can change attitudes about genders.

Answer 2

Okay, how well grounded are you in maturity?  Anthropology is about asking the same questions people have asked since your species started to think.  (The apple story in the Bible was about getting the ability to think, to know good from evil, that sort of think) But every generation you need to look at the question a different way and eventually, in some cosmic event, you may be the one to get the right answer and everyone will curse your name at church.

Here is the thing about genders, from the s*x perspective.  You are only half of a human organism.

Until a male and female come together, and God knows that's hard to do today, they form the human unit.

So by our and other primate genetic makeup we are inevitable social creatures.  Only social creatures that bond regenerate.  

As you probably know, children of divorce are more likely to divorce, so it may be said that unsuccessful bonding increases the chance of future failure of your line.

I never really thought about it before like that, so good question, but we are not human but just beings until we bond with another and then the two of use form a human.  A complete unit.  That's kind of poetic.

Answer 3

When organisms became too complex to reproduce by cell division, a new way came about (s*x).

Answer 4

Genders are a social and cultural construct, and they've "evolved" from a necessity to catalog differences in our own species.

If you mean biological s*x, it is still debated as to why as parthenogenesis is generally considered superior. The general argument goes that with sexual reproduction, the competition is brought to a higher level as well as sexual reproduction being generally more pliable than other forms. There's also the fact that sexual reproduction increases diversity of the organism and allows for evolution as where parthenogenesis generally does not.