Evolutionists! When did the change come?

Question

When (and WHY) did sexual relations enter the picture?

Answer 1

Well asexual reproduction is still used by some organisms, and some are in between, but on the whole sexual reproduction is better, despite the cost in energy, as it allows faster evolution (the combination of beneficial mutations will occur faster and deleterious mutations will accumulate more slowly) eg. Barton and Charlesworth 1998, Davies et al. 1999, Sá Martins 2000. So that's the why.

It is believed that sexual reproduction evolved as early as 2.5 to 3.5 billion years ago (Bernstein et al. 1981). A gradual origin, with each step favored by natural selection is possible (Kondrashov 1997). The earliest steps involve single-celled organisms exchanging genetic information, without there needing to be distinct sexes. Males and females would then evolve together.

Answer 2

Humans and the fruit fly inherit the same "sexing" and segregation from the sea slug's penile fencing.

You are talking way before the "water-line" , before we evolved bone. Even before prawns.

Plants on the other hand has a colourful warring history of about six sexual morphs. The similarity is coincidental and entirely different.

It's like Darwinistic tinkering arriving at the same answer , but definitely not related.

Cellular "sex" is more of cytoplasmic "communication" and some would look erriely like sex. But , they are not sex , but the same mechanism that under most in-vitro conditions , most animal cells do not grow on top of one another , while plant callouses grows in a lump. While it is difficult to grow plant callouses to 1-cell thick. It is difficult to grow animal cells to a callous except if you harvest the embryo.

Harvested from the somate , an animal cell usually and easily goes bad. The animal embryo behaves like a plant there can be "potted".

Answer 3

Sexual "relations" refers specifically to higher animals. However, sexual reproduction developed first in simple plants, later in the simplest of animal forms, and only many millions of years later did animal species develop anatomy that would allow for sexual "relations". This was probably the single most important development that set the stage for biological evolution. Asexually reproducing plants and animals can't change a great deal because each individual organism gets all of its genetic material from one parent. But the mixing of genetic material from two individuals opens the door to thousands of different genetic combinations. Most early animals reproduced sexually the way most fish and many invertebrates do today, by the release of gametes into the water, where random fertilization occurs. And early plants reproduced the way most plants do today, by releasing male gametes into the air.

Answer 4

What is sex other than an exchange and mixing of genetic information to make offspring stronger than their parents? It's the reason why inbreeding doesn't work. And laymen usually don't realize that "sex" also occurs in the cellular level. Bacteria can propagate by "cloning" itself, but it stands a better chance when it "mates" with other bacteria of the same species.

Sexual attraction is also an instinctive behavior. We are attracted to those that show some sort of physical advantage to pass on to our children. This is why we aren't instinctively attracted to people with physical defects.

Answer 5

As sex is simply a method of swapping genetic material, very early on in the history of life (no, by early on I don't mean 4, 990 years ago either). Bacteria engage in sex.

C'mon, give me a proper challenge, that was too easy.

By the way, how was that question meant to prove that a 2,500 year old book is anything other than a series of fairy tales for bronze age farmers?????

Answer 6

Some form of sexual congress 'entered the picture' as soon as creatures evolved that were complex enough to utilize sex as a means of reproduction. Why did sex happen? Think of it this way: You need sex to propagate your bloodline. Those individual creatures who HAVE a sex drive will be successful in propagating their bloodline and will pass on that sex drive genetically. Those individual creatures WITHOUT a sex drive will NOT propagate their bloodline successfully and so that trait (no sex drive) will NOT get passed on genetically. Ok?

P.S. Hows that popcorn, Tube Dude? Leave a bad taste in your mouth?

Answer 7

The sexual relation probably came very naturally, the real head scratcher is if Mankind was derived from a genetic goo on pure happenstance, how did the goo know to make both Man and Woman?

Answer 8

I did not have sexual relations with that woman!

Answer 9

When did the change come? Are we talking about evolution or menopause.

Answer 10

Sex entered the equation as soon as it was realized that it felt good.