2006-11-02 10:15:43 · 8 answers · asked by Kidd! 6 in Science & Mathematics ➔ Biology
Sorry, I meant the ancestors of humans.
2006-11-02 10:20:47 · update #1
"Sexual" reproduction occurs in microbes. There are various ways in which microbes undergo sexual reproduction, and many can recombine genetic material by sexual reproduction or reproduce asexually.
In multicellular animals, there are some intermediate strategies. Grouper fish start as females, and if there is no male, the largest female transforms into a male. There are some "parthenogenetic" vertebrates that reproduce asexually, and some that alternate between sexual and asexual reproduction.
In summary, sexual dimorphism (strict distinction between male and female) is not required for sexual reproduction.
2006-11-02 10:44:42 · answer #1 · answered by novangelis 7 · 1⤊ 0⤋
Both sexes did not evolve simutaniously as much as they are different parts of the SAME evolution. The male is a modified female- in humans, it is simply missing part of the 23rd Chromosome. So any mutation in the male or the female is carried throuh the species. You're making a difference between males and females where there isn't one.
2006-11-02 10:34:10 · answer #2 · answered by Anonymous · 0⤊ 0⤋
That usually is the case when a species " chooses " sexual reproduction. Remember; individuals do not evolve; populations do. Of course, the ladies will say they are more "evolved " than men.
2006-11-02 10:33:47 · answer #3 · answered by Anonymous · 0⤊ 0⤋
This is an easy one. If the world gets too hot, we've proven that we can survive it because the "Cradles of Civilization" were in hot, dry areas. If the world gets cold, then we've already proven that we can withstand ice ages, and that's without any "high" technology. If the world gets overpopulated, it will, out of necessity, balance itself out. I don't think we need to worry about surviving the next 100 years. The real question is how to we keep the next 100 years from becoming the next Dark Age.
2016-05-23 21:22:03 · answer #4 · answered by ? 4 · 0⤊ 0⤋
Well, what other explanation could there be? There have been sexes ever since bacteria came in to existence bilions of years ago.
2006-11-02 10:18:22 · answer #5 · answered by Anonymous · 0⤊ 0⤋
In other words, which came first, the penis or the vagina? Chicken or the egg... I bet you are on to something here. Wonder what it is....
2006-11-02 10:18:49 · answer #6 · answered by Kokopelli 7 · 0⤊ 0⤋
Yes...Certainly...
2006-11-02 10:22:57 · answer #7 · answered by Anonymous · 0⤊ 0⤋
NO. There is NO such thing as evolution.
2006-11-02 11:28:51 · answer #8 · answered by lemon drops 3 · 0⤊ 2⤋