Male or Fe-Male First !!!!????

[Kuldeep]

While responding to chicken or the Egg first, I thought of converting the debate on a different thread as to :

Which existed first in any of the species and How?...Male or the Female?....What was the time gap between the two?...What single partner did by the time its partner appeared about sexual satisfaction and again....How the second parner appeared????

All these question sounds interesting and challenging as well !!!

[Praxius]

Well before anybody gets too far into detail, please note that some may say the woman first, because everybody appears with female genitals while developing as a fetus, which is incorrect, since the genitals are a blend of both, thereby a-sexual in apperance (not by genes though)

and as if goes for male or female first being born? that all depends on the first set of genes past to start the evolution.... it's kind of an unanswerable question.... it's like trying to guess which one of your billion sperm is gonna pass their code. It's a 50/50 for the most part.

[gallo]

Quote by: Kuldeep Which existed first in any of the species and How?...Male or the Female?....

The question is as silly now as it was in the first place. Unless you are talking about protists and the origin of sexual reproduction hundreds of millions of years ago, there is now point at which there is a single individual that is the only member of some species and must therefore be either male of female.

What was the time gap between the two?...

There was no time gap since new species are always populations of many individuals.

What single partner did by the time its partner appeared about sexual satisfaction and again....

Since both sexes always exist in any population, the question is meaningless.

How the second parner appeared????

By the gradual accumulation of small genetic differences in an isolated population of many individuals. Both male and female always evolve together in any population.

All these question sounds interesting and challenging as well !!!

Questions about how sex evolved might be interesting, as are questions as to why sexual reproduction, which is about 1/2 as efficient as reproduction by simple division, is maintain in almost every major species, both plant and animal. Those do pose some interesting questions. On the other hand, your question isn't interesting because it seems to ignore reality.

[Athena]

Hetermorphism means changing from one sex to another. Below is a scientific explanation of a primitive frog, known to change its sex when there are too many females and no males for reproduction. However, frogs lay eggs and the then the male fertilizes them, making it much easier for them be assexual.

However, things like temperature and available and chemicals such as herbicides can determine the sex of some species. Before sex is determined these species could go either way, male or female.

A hetermorphism human, is one who is genetically male, but has no receivers for testosterone. Without receivers fortestosterone, the male does not devolope a penius, and comes out looking like a girl. Sometimes it isn't until later in life that it is discovered the "girl" is attracted to girls and does not have a uterus.

Children born with poorly developed penius, were operated on to be as girls. This practice is stopped because some but not all, develop to be hetersexual, preferring the opposit sex. This is excessively confusing when they have been raised to be girls and must deal with the fact they are male.

Heteromorphic Sex Chromosomes in the Rare and Primitive Frog Leiopelma hamiltoni from New Zealand -- Green 79 (3): 165 -- Journal of Heredity Leiopeima hamittoni, one of the rarest and most primitive frogs, has a ZW/ZZ chromosomal system of sex determination. The karyotype has 2n = 18 chromosomes, all of which are metacentric or submetacentric, except for the smallest pair, which are telocentric. The distribution of constitutive heterochromatin as detected by C-banding allowed all but two pairs of chromosomes to be readily identified. Two C-band heteromorphisms were observed. In all individuals of both sexes, a band was present on the long arm of only one of the homologous chromosomes no. 3. The other heteromorphism was sex-specific. The centromeric region of one of the telocentric chromosomes was enlarged and highly heterochromatic in females only and was interpreted as denoting the W chromosome. Female heterogamety may be a primitive condition in frogs.

In conclusion I speculate what came first was hetermorphism. Clearly distintive opposite sexes would have come later.

PS When I googled assexuality I found many arguments that there is so much evidence of assexuality that we should consider homosexuality as normal and caused by nature.

[5010]

A mitochondrion told me females came first, especially if you consider prokaryotes female.

[Kuldeep]

Quote by: gallo There was no time gap since new species are always populations of many individuals. Since both sexes always exist in any population, the question is meaningless. By the gradual accumulation of small genetic differences in an isolated population of many individuals. Both male and female always evolve together in any population.

This you could speak on the basis of theory of evolution. But, if Adam and Eve story is correct then humans have multiplied from those TWO only. In that case, my question goes to Christians: Did God created Adam first or Eve and how ???

Questions about how sex evolved might be interesting, as are questions as to why sexual reproduction, which is about 1/2 as efficient as reproduction by simple division, is maintain in almost every major species, both plant and animal. Those do pose some interesting questions.

The reason behind sex urge is already found by Science as Pitury gland in the brain and also Harmonal difference. But have not suggested how male/female ratio is maintained on specific fertilization of female eggs !! Though, Science has found Chromosomes are responsible for developing into male or female.

On the other hand, your question isn't interesting because it seems to ignore reality.

If reality is theory of evolution...if reality is something different then what????

[Kuldeep]

Quote by: 5010 A mitochondrion told me females came first, especially if you consider prokaryotes female.

Gallo has cleared, on the basis of evolution that species evolve in large numbers in the begining itself ! If evolution is fact then Gallo is correct ... But if evolution is some sort of mirage, then what ???