Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [abiogenesis]

The study of how biological life arises from inorganic matter through natural processes, and the method by which life on Earth arose.

16
votes
7answers
10k views

How did the first self replicating organism come into existence?

When people try to explain evolution, they tell me that evolution is a cumulative result of mutations & natural section of the more superior individuals of a particular species. I think I'm fairly ...
21
votes
4answers
7k views

Why did abiogenesis only happen once?

If the "primordial soup" theory of abiogenesis is to be believed, self-reproducing organisms spontaneously arose on Earth at least 3.5 billion years ago, surprisingly soon after the Earth cooled down ...
48
votes
3answers
2k views

Can scientists create totally synthetic life?

This particular question has been of a great deal of interest to me, especially since it dives at the heart of abiogenesis.
44
votes
5answers
1k views

Why are amino acids in biology homochiral?

Why are nearly all amino acids in organisms left-handed (exception is glycine which has no isomer) when abiotic samples typical have an even mix of left- and right-handed molecules?
10
votes
1answer
941 views

Has any large-scale origin-of-life simulation/experiment been done?

I have been thinking a little about the origins of life, and was further inspired by this question: How did the first self replicating organism come into existence? I can accept that we don't quite ...
11
votes
1answer
562 views

What elements are a possible basis for life?

I've been told that life on earth is carbon-based, Then I got curious about one thing: What are the possible bases for life and under which circumstances could lifr based on other elements exist? If ...
6
votes
4answers
411 views

Do we see protocells forming in nature today?

I understand that the current theory of chemical evolution (aka origin-of-life, abiogenesis) involves lipid-based protocells that enclosed RNA and perhaps some other compounds as a first steps to life....
22
votes
3answers
674 views

Good source that explains the evolution of single-celled organisms “from scratch”

Are there any books or sites that detail, step-by-step, the evolution of the first single-celled organisms (bacteria, archaea) from a Miller-Urey-like beginning? That is, assumes only amino acids, ...
13
votes
3answers
335 views

Formation of Life

Originally, life evolved from non-living matter. Why is life only generated from other life nowadays, and why doesn't it evolve from inanimate matter, like it did originally billions of years ago, ...
12
votes
2answers
3k views

Can we make a rough estimate of the number of generations since the origin of life?

According to what we've learnt : we can approximate the number of generations since the first human pretty much like us (depending what / who we talk about). we have an idea of the series of life ...
8
votes
4answers
698 views

What is the viability of Intelligent Design as a supplement to chemical abiogenesis and Darwinian Evolution?

First of all I am not endorsing Intelligent Design (Wikipedia link); I'm asking this because I (someone who does not have a background in biology, organic chemistry, or philosophy) got into a ...
4
votes
2answers
2k views

Experiments on abiogenesis in laboratories

Has any scientist created an organism in a laboratory using the primitive kind of Earth's environment, like the one used by Miller, etc.? I read that protobionts (coacervates and microspheres) have ...
4
votes
0answers
249 views

What is the most complex biological organism (or precursors) that we have been able to synthesize from raw materials?

In the Miller–Urey experiment they produced several amino acids. I'm not sure if there were other similar experiments that got further. http://www.jcvi.org/cms/press/press-releases/full-text/article/...
2
votes
1answer
133 views

Synthetic life creation - status of attempts

First I apologize for my incorrect English and for lack of modern knowledge regarding the subject (I studied biology a long time ago). I'm interested to find out: if there were successful attempts ...
0
votes
1answer
133 views

What is the point at which abiogenesis is complete and evolution begins? [closed]

Is the minimum criterion for life a single cell? It seems that self-replicating RNA is not enough, but I don't know. What would be the most basic cell that could fit this criterion and what cells ...