How does Evolution explain the existence of different genders?

Question

Does Evolution explain the existence of different genders .. Males and Females.

What I meant is how did they come to exist... or evolve. It all started with a single cell organism that had no problems reproducing. Then at which point did the split happen that is females and males. Why was it a good thing... Why aren't we just multicellular organisms that can replicate individually.

Answer 1

Gender is a logical outcome of sexual reproduction by multicellular organisms. First, diploidly requires meiosis to get haploid germ cells. Then the germ cells need to meet, so free-living gametes come next. At first these gametes are the same size, but usually one parent begins to cheat and make smaller, more numerous and more mobile gametes (sperm). The other gender(s) begin to increase the size of their gametes in response (eggs). Finally, the number of genders is whittled down to two. (Exceptions are found in some species of fungi, which have hundreds of genders.)

Answer 2

The origin and survival of complex species rests on the need to diversify the genetic makeup of offspring. Asexual reproduction just duplicates the genes present in the parent plant or animal. There are animals which reproduce by just the exchange of genetic material, but they are very simple and haven't evolved much. Evolution explains a great deal by the phenomenon of probability over vast spans of time, so if you accept that, it makes sense that two genders would evolve and generate more complex living things.

Answer 3

Gender happened very early on. Single, replicating organisms started combining genes with others to create reproduction. This was very helpful because it allowed for a much more diverse gene pool. By combining genes rather then reproducing them, you have each generation slightly different then the other, without the help of mutations.

Answer 4

Yes it does explain it.

There are many different strategies for reproduction found in life. From completely asexually reproducing organisms, to bacteria that exchange DNA, to organisms that sometimes use asexual and sometime sexual reprodoction; to all ranges of asexual-vs-sexual phases; to organisms that have sexual reproduction but all individuals have both male and female parts (hermaphrodites); to organisms where the genders are determined by environment (e.g. males and female bees are determined by what they eat during larval stages); to organisms like us that have genetically-determined genders.

Each of these systems has advantages in some environments and disadvantages in others. Sexual reproduction has definite advantages when the environment is changing fast enough that new genetic combinations produce better chances for survivors. And dedicated genders have advantages in that the same organism doesn't have to have both types of sex organs.

P.S. See also Some Dude's answer. He really nailed it.

Answer 5

Some animals do reproduce asexually. The DSN for the offspring are identical to their mothers. The disadvantage is that "bad genes" (a gene carrying the likelihood of getting some fatal disease, for example) get passed to the offspring. With two parents, there is only a 50% chance the bad gene is inherited. In theory, this means that the bad genes get weeded out eventually by natural selection.

Answer 6

It is really more machine like than you would have thought. First, cellular structures that exchanged genes were identicle, without a male or female. Later, a mutation caused the structures to evolve to exploit the equality of the cells, one causing a type of cell to mutate as to cause a genetic exchange without having to bear the burden of growth. These renegades evolved into males.

Answer 7

even as organisms reflect in my opinion, the "mom" and "daughter" are genetic clones of one yet another. this may be disadvantageous because there is not any room for version if the ecosystem ought to change. which potential, once you've some mutations in certain genes, you're able to resist chilly extra effective or warm extra effective. in case you carry both instruments of genes with you, you should withstand both or supply upward push to offspring that ought to resist one or the different. even as it occurred is a tougher question. Even some bacteria can change genetic cloth utilising a simplified "insertion" approach the position the "putting appendage" is genetically inherited as well. yet even as did there exist men and females human beings is not uncomplicated question. possibly in some unspecified time sooner or later by technique of interpreting evolution of the Y chromosome, human beings can commence to comprehend even as the chop up occurred as one concept is that the Y chromosome is derived from the X. In summary, it really is an outstanding element because there is genetic range in a inhabitants because men and females quite everyone seems continuously swapping genetic information by potential of DNA. that's efficient for the species because a minimum of one sub-inhabitants will maximum probably continuously be able to proceed to exist.

Answer 8

I'm not sure what you mean by Evolution explaining the existence of gender differences, but males and females differ in their genetic make up. It differs from species to species but for humans, Males have XY sex chromosomes while females have XX sex chromosomes