The Male-Female Problem (for evolution)

According to scientists, there are nearly a million species on the face of the earth. While there are many asexual creatures and hermaphrodites in the single cell and lower life forms, in the higher life forms such as mammals, these are rarely (if ever) found. In fact, nearly all of the higher forms of life have male-female pairing, i.e. two complementary creatures of the same species with distinct and complementary sexual organs. In pseudo-hermaphrodites where there is an abnormality in which both sexual organs are present, the creature is nearly always sterile, and in extremely rare cases where one set of organs is fertile, the other set is not.

Let's take a look at these two progressions and see if we can observe any possibilities and transitions in all the tens of thousands of species throughout the world.

Transition from an asexual organism to a single sex creature

For the transition from low level asexual organism to a higher level single sex creature, the mutation process could potentially progress in two fashions.

1. First by decreasing the asexual characteristics while simultaneously acquiring the single sex characteristics of the final creature.
2. Secondly by maintaining full asexual characteristics while gradually developing the single sex characteristics. Then the asexual characteristics would gradually disappear.

These two progressions are shown in the following tables:

As shown in both the above tables, no in-between states that are fertile have ever been observed to our knowledge. Organisms in transition are always sterile, or if fertile (which has never observed), would most likely be so removed from a complementary developing creature that it would die prior to encountering its mate, thus breaking the evolutionary mutating process.

Transition from hermaphrodite to single sex creature

Let's look at the potential transition processes for a low level hermaphrodite to a higher order single sex creature.  The following table shows a possible progression (over thousands of years of course) from having both fully functional male and female components within the organism, to having only one set of sexual organs. Of course, during those eons, the transitional hermaphrodite has to find a fertile complementary mate with which to reproduce a mutant to continue the evolutionary process.

Transition from an asexual lower life form to a hermaphroditic creature

For an asexual lower life form to "evolve" to a slightly higher hermaphroditic life form, the following potential process would be need to be taken.

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