2006-06-22 04:40:22 · 12 answers · asked by bringenkaos 2 in Science & Mathematics ➔ Biology
The answer *appears* to be yes. That is the current scientific theory of our origins. There is no other *scientific* theory that explains what we see. (I.e. 'something just created/designed everything' is a nice theory, but not a *scientific* theory as it is not testable, makes no predictions, and does not *explain* anything).
All the evidence points to the fact that every organism on the planet is a product of evolution from ancestral organisms. This is not just fossil evidence, but genetic evidence linking humans to other apes (like chimps and gorillas), apes to other primates (like monkeys), primates to other mammals (like tigers and tree shrews), mammals to other vertebrates (like birds and salamanders), etc. etc. all the way back to single-celled organisms. Every step has genetic links ... for example jellyfish are genetically linked to sponges, which have genetic links to amoebazoans, which have genetic links to early bacteria, etc.
And the *amount* of genetic linkage can be computed based on the chemistry of a single molecule found in every organism on the planet ... a molecule called DNA.
And the order of these genetic links all match up perfectly with order in which the ancestors for each organism appear in the fossil record (i.e. earlier genetic links appear in lower layers of rocks).
And the *amount* of the molecular/genetic linkage all matches up with *when* each ancestor appears in the fossil record (i.e. the amount of molecular DNA difference expected based on known mutation rates, matches up perfectly with the ages of the rocks in which the fossils are found).
That is the evidence. Those are *facts*. Those facts are not in dispute, only the explanation for them. If you can come up with a better *scientific* explanation for this all this evidence ... these observed *facts* ... then you would get the Nobel Prize.
2006-06-22 06:51:59 · answer #1 · answered by secretsauce 7 · 2⤊ 2⤋
I don't see how that's possible. Saying that the most intarcate living thing evolved from a single celled bug of some sort sounds like the theory of a 4 year old to me.
2006-06-22 05:11:33 · answer #2 · answered by Anonymous · 1⤊ 0⤋
"If we evolved from single cell organisms why are we male and female?" Because there are evolutionary advantages to sexual reproduction. "If we evolved from single cell organisms how did we end up reproducing sexually?" There are various hypotheses as to the development of sexual reproduction. It is not within the scope of a Y!A post to describe them. "Also, how could our male and female bodies have evolved individually so perfectly that we can reproduce sexually together?" One thing which is clear is that the sexes did not evolve individually, but together. If it really is a serious question then you should ask in the science section, or better yet look into the matter on the internet or by reading a book.
2016-05-20 11:20:09 · answer #3 · answered by Anonymous · 0⤊ 0⤋
It's a bit misleading to say 'a single celled organism', as most single celled organisms readily incorporate foreign DNA/RNA into their genetic makeup. Some single celled organisms enter into endosymbiotic relationships as well.
Below a certain level of evolutionary development a concrete individual or species identity ceases to exist. There is no single universal ancestor below the multicellular level.
But, were are our most distant ancestors (emphasis on the plurality) single celled organisms?
Yes. It's one of those 'journey of a thousand miles' kind of things.
2006-06-22 05:09:39 · answer #4 · answered by corvis_9 5 · 0⤊ 0⤋
No, We evolve from a group of cell, called a cluster which forms tissues. Tissue constitute together to form organs. organs constitute a system. Group of system constitute a body.
Virtually, impossible for humans, this is quite relevant in some phylum like mollusk and arthropod etc....
2006-06-22 04:54:01 · answer #5 · answered by Chandni M 1 · 0⤊ 0⤋
YES! i know this as fact and i have used this fact to kill the chicken or egg question many times
and science says if u go further back u will note that among other things the life on this planet was made from stray elements from stars goin super nova
2006-06-22 18:43:12 · answer #6 · answered by the great suijin 2 · 0⤊ 0⤋
According to the modern theory of evolution, yes.
2006-06-22 04:49:58 · answer #7 · answered by Cap'n Eridani 3 · 0⤊ 0⤋
i wasnt there, i dont know. i do believe in the theory of evolution
2006-06-22 06:11:38 · answer #8 · answered by an-toe-knee 1 · 0⤊ 0⤋
There is no conclusive evidence that we did.
2006-06-22 06:01:56 · answer #9 · answered by ID Guy 2 · 0⤊ 0⤋
Like duh, no...
If one cell can be made... why not make a few cells in the begginning of evolution....
2006-06-22 04:58:59 · answer #10 · answered by vs1h 2 · 0⤊ 0⤋