My understanding of evolution is that we evolved from one-celled organisms. Does evolution 'teach' all current life forms evolved from a single one-celled organism, or multiple one-celled organisms?
2006-10-07 18:13:07 · 5 answers · asked by Nowhere Man 6 in Science & Mathematics ➔ Biology
I think the answer to your question (if I understand it right) is that all life evolved from a single 'species' of one-celled organism (if you can call it a 'species' ... with things that reproduce asexually, it's difficult to differentiate what a species is). The reason for this is that all life uses the same exact type of DNA molecule as the basis of replication.
That is not to say that this was the only organism around. There may have been many different kinds of organisms that used different types of DNA ... but none of their descendants are around today, which indicates that one type dominated (i.e. ate) its rivals, and they died out, perhaps in those early billion years before eukaryotic cells and multicellular life-forms.
2006-10-07 18:48:05 · answer #1 · answered by secretsauce 7 · 0⤊ 0⤋
everything that i've come across doesn't really say. there were different organisms that sprung up to fill different niches (living environments), so i guess if we all evolved from one-celled organisms, a whole bunch of the same one-celled organisms just started growing in this one area and then spread and evolved from there.
2006-10-08 01:15:47 · answer #2 · answered by mighty_power7 7 · 0⤊ 0⤋
The answer to this question is hidden in our Genes. Humans and Chimpangis has a similarity of 97% of Genes. So it may be possible that the Mutation may be the factor for these changes.
2006-10-08 01:31:21 · answer #3 · answered by Manik Ghosh 2 · 0⤊ 1⤋
What the are you rambling on about?
2006-10-08 01:16:04 · answer #4 · answered by triniqueen40 4 · 0⤊ 0⤋
No! That would blow religion! We are, just what we are
2006-10-08 01:15:21 · answer #5 · answered by Anonymous · 1⤊ 0⤋