The Evolution of Sex

Here I deconstruct human sexual reproduction to show how it most likely evolved.

To download this video (copyright free):
http://www.mediafire.com/?kylnaumzjdj

If you wish to translate this video you can download the PowerPoint file from:
http://www.mediafire.com/?dzzmn4xjntr

To learn more about meiosis check out:
http://en.wikipedia.org/wiki/Meiosis

To learn more about the evolution of sex:
http://www.talkorigins.org/indexcc/CB/CB350.html
http://en.wikipedia.org/wiki/Evolution_of_sex

Music: Violin Concerto The Four Seasons in F minor

Sorry about including flaccid penis dimensions that was an error on my part. Flaccid Shaft Length: 7.76 +/- 1.3 cm
Erect Shaft Length: 13-15 cm mean (depending on the study).

Error: The fish cartoon at 8:09 is probably the species Xiphophorus maculatus which is one of the few fish that have internal fertilization.

And remember to Think about it.

Category:

Science & Technology

Tags:

• Sexual
• Reproduction
• Animal
• Plant
• Yeast
• Human
• Evolution
• Irreducible
• Complexity
• Creation
• Intelligent
• Design
• Origin
• Sperm
• Egg
• Gonads
• Genitals
• Mate
• Penis
• Vagina
• Haploid
• Diploid
• Meiosis
• Algae
• Single
• Multi
• Cellular

[archilles1195]

Mmm before human genitals (sexual reproductive organs) are still immature, do human (or half human, or what you wanna call it) still reproduce asexually because if it didn't, then bye bye human.... Or, by Ken Millers standards, such irreducible complexity's components had different functions before they got incorporated into one complex system. What's the sperm for?

[archilles1195]

@2:02 He said "Human sexual reproduction may be irreducible complexity"..... LOL and then moved on with the evolution of sex so stories.

[TroddinSod]

@chillinpotato5 You're definitely a brain dead parrot merely quoting what you've read or heard someone say. You don't even realize that you don't understand the question poised to you. This is the LAST TIME I'm going to ask you, If you fail to answer, I will not respond to you ever again:

Here is the REQUEST::

Describe factors of the ENVIRONMENT that you allege 'selected' or 'favored' a mutation of an asexual species that headed toward 'sex', BEFORE SEX WAS HAD!

[TroddinSod]

@chillinpotato5 Name the asexual species that could not combine themselves with another, but had a mutation that 'somehow' enabled them to combine their genes. Tell me precisely what mutation(s) occurred within one cell to enable & want it to 'combine' itself with another who also, out of mathematical luck, had the same mutation(s)? Then describe the aspects of the environment that 'selected' these alleged mutations over the status quo asexual population, BEFORE THEY COMBINED.

[RefutingSkellyism]

@chillinpotato5 Just as you failed to answer the question, so did the video. I've ready many books on evolution. Not one has described a Precambrian asexual species that mutated toward sex, before sex, & described the environments that preferred such mutations over their healthy asexual siblings. There cannot be 'one' mutation & then have sex.Diversity after sex is not an issue. It's all about mutations before sex, that led to sex.There is no answer.You need faith to believe it.

[RefutingSkellyism]

@chillinpotato5 Meiosis is not sexual reproduction. You misunderstood the question (amazing, all bio evo's do) What environments selected mutations toward sex before sex was had? An increase in genetic code occurs after sex. There is not one mutation and then sex. There are likely thousands of mutations that had to have occurred before sex was possible. Describe a mutation toward sex in any Precambrian & the environment that would favor it over it's siblings.

[chillinpotato5]

@TroddinSod

...cont diversity and offers a significant added resistance from viruses and disease. Another aspect is sexual attraction, which aids the spread of beneficial traits while removing harmful ones.

'...This video doesn't answer the question.

The answer to this question has been around for decades, all you had to do was look. Might I suggest taking a biology course at your local community college or purchasing a book on evolution. It's really very interesting.

[chillinpotato5]

@TroddinSod

'What did you have before sex ever occurred'

Asexual Reproduction

'what mutations headed toward sex'

One is Cell Fusion which is when two cells combine and separate, each leaving with a copy of the others DNA. Cell Fusion likely evolved as a defence mechanism. The other is Meiosis which is a particular type of cell division. These did not have to evolve simultaneously.

'what kinds of environments would favor such mutations'

Sexual reproduction increases genetic cont...

[TroddinSod]

This video is so stupid, it doesn't deal with what environments would select for random mutations heading towards sex of any kind. It misses the point entirely. What did you have before sex ever occurred, and what mutations headed toward sex, and what kinds of environments would favor such mutations without sex? I love how evillusionists never follow their own theories when they can't demonstrate how their theories apply in a particular scenario. This video doesn't answer the question.

[hisham031170]

"Human sexual reproduction may be irreducible complexity" at 2:03

LOL. Failed statement to begin with. So, no use of proving anything beyond 2:03.