|
Ask a biologist
|
 (May 23, 2015 at 9:05 pm)Chuck Wrote: Explain how sex came to be. Tough one ... because it's not well settled (difficult to test). Asexual reproduction arose first (single celled organisms basically just dividing), and early in the evolutionary process, either a mutations arose (creating parasitic genetic elements) or through an endosymbiotic process, bacterial proteins that were able to induce meiosis in eukaryotic cells (there's also an RNA theory of sexual reproduction). |
|
« Next Oldest | Next Newest »
|
| Messages In This Thread |
|
Ask a biologist - by nihilistcat - May 21, 2015 at 8:54 pm
RE: Ask a biologist - by Minimalist - May 21, 2015 at 8:59 pm
RE: Ask a biologist - by Pyrrho - May 21, 2015 at 9:14 pm
RE: Ask a biologist - by Polaris - June 4, 2015 at 9:49 pm
RE: Ask a biologist - by nihilistcat - June 6, 2015 at 2:30 pm
RE: Ask a biologist - by Dystopia - May 21, 2015 at 9:13 pm
RE: Ask a biologist - by ignoramus - May 21, 2015 at 9:20 pm
RE: Ask a biologist - by Pyrrho - May 21, 2015 at 9:25 pm
RE: Ask a biologist - by nihilistcat - May 22, 2015 at 5:19 pm
RE: Ask a biologist - by Pyrrho - May 22, 2015 at 5:51 pm
RE: Ask a biologist - by Aractus - June 3, 2015 at 5:13 am
RE: Ask a biologist - by Anomalocaris - June 3, 2015 at 10:09 am
RE: Ask a biologist - by Jenny A - May 22, 2015 at 12:04 am
RE: Ask a biologist - by Alex K - May 22, 2015 at 3:10 am
RE: Ask a biologist - by nihilistcat - May 22, 2015 at 6:52 pm
RE: Ask a biologist - by Longhorn - May 22, 2015 at 4:11 am
RE: Ask a biologist - by Angrboda - May 22, 2015 at 6:03 pm
RE: Ask a biologist - by Pyrrho - May 22, 2015 at 8:44 pm
RE: Ask a biologist - by nihilistcat - May 22, 2015 at 8:58 pm
RE: Ask a biologist - by The Valkyrie - June 3, 2015 at 10:54 pm
RE: Ask a biologist - by Pyrrho - May 22, 2015 at 9:03 pm
RE: Ask a biologist - by nihilistcat - May 22, 2015 at 9:07 pm
RE: Ask a biologist - by Pyrrho - May 22, 2015 at 9:12 pm
RE: Ask a biologist - by nihilistcat - May 22, 2015 at 9:38 pm
RE: Ask a biologist - by Anomalocaris - May 22, 2015 at 9:32 pm
RE: Ask a biologist - by Alex K - May 23, 2015 at 11:31 am
RE: Ask a biologist - by nihilistcat - May 23, 2015 at 4:32 pm
RE: Ask a biologist - by Alex K - May 25, 2015 at 10:42 am
RE: Ask a biologist - by Longhorn - May 25, 2015 at 10:48 am
RE: Ask a biologist - by ignoramus - May 25, 2015 at 5:35 pm
RE: Ask a biologist - by nihilistcat - May 25, 2015 at 5:18 pm
RE: Ask a biologist - by Whateverist - May 23, 2015 at 4:36 pm
RE: Ask a biologist - by Anomalocaris - May 23, 2015 at 5:28 pm
RE: Ask a biologist - by nihilistcat - June 5, 2015 at 1:00 am
RE: Ask a biologist - by Lemonvariable72 - May 23, 2015 at 4:51 pm
RE: Ask a biologist - by nihilistcat - May 23, 2015 at 6:30 pm
RE: Ask a biologist - by Lemonvariable72 - May 23, 2015 at 6:38 pm
RE: Ask a biologist - by Whateverist - May 23, 2015 at 6:28 pm
RE: Ask a biologist - by nihilistcat - May 23, 2015 at 7:15 pm
RE: Ask a biologist - by Lemonvariable72 - May 23, 2015 at 7:21 pm
RE: Ask a biologist - by Jackie - May 23, 2015 at 7:43 pm
RE: Ask a biologist - by nihilistcat - May 23, 2015 at 8:29 pm
RE: Ask a biologist - by Anomalocaris - May 23, 2015 at 9:05 pm
RE: Ask a biologist - by nihilistcat - May 23, 2015 at 9:22 pm
RE: Ask a biologist - by ignoramus - May 23, 2015 at 10:01 pm
RE: Ask a biologist - by Anomalocaris - May 23, 2015 at 10:17 pm
RE: Ask a biologist - by nihilistcat - May 23, 2015 at 10:36 pm
RE: Ask a biologist - by Lemonvariable72 - May 23, 2015 at 10:57 pm
RE: Ask a biologist - by ignoramus - May 23, 2015 at 10:54 pm
RE: Ask a biologist - by Anomalocaris - May 23, 2015 at 11:04 pm
RE: Ask a biologist - by nihilistcat - May 24, 2015 at 11:47 am
RE: Ask a biologist - by IATIA - May 24, 2015 at 12:06 pm
RE: Ask a biologist - by nihilistcat - May 24, 2015 at 2:54 pm
RE: Ask a biologist - by IATIA - May 25, 2015 at 1:19 am
RE: Ask a biologist - by nihilistcat - May 25, 2015 at 2:19 pm
RE: Ask a biologist - by Longhorn - June 3, 2015 at 6:09 am
RE: Ask a biologist - by ignoramus - June 3, 2015 at 6:26 am
RE: Ask a biologist - by Longhorn - June 3, 2015 at 6:35 am
RE: Ask a biologist - by Whateverist - June 3, 2015 at 6:43 am
RE: Ask a biologist - by Exian - June 4, 2015 at 10:02 pm
RE: Ask a biologist - by JuliaL - June 3, 2015 at 9:47 am
RE: Ask a biologist - by ignoramus - June 3, 2015 at 6:47 pm
|
