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Questions tagged [origins]

Origins of Life is studied through a combination of paleontology, chemistry, and extrapolation from the characteristics of modern organisms, and aims to determine how pre-life chemical reactions gave rise to life on Earth.

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Why should all life on Earth have a common ancestor?

In principle, it should be possible for whatever happened to create life to have happened in multiple places. Out of the millions of years this could have happened, it seems odd that it didn't happen ...
R-Obsessive's user avatar
1 vote
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Is it rare for a virus to be similar to its host?

Halomonas bacteriophage vB_HmeY_H4907 discovered recently in the Mariana trench is apparently highly homologous to its host: To our best knowledge, it is the deepest isolated siphovirus from the ...
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Is Eugene Koonin's probabilistic argument for the necessity of a multiverse to explain the origin of life sound?

About Eugene Koonin Eugene Koonin, Ph.D. NIH Distinguished Investigator Evolutionary Genomics Research Group NLM/NCBI Dr. Koonin graduated from Moscow State University, Moscow, Russia and received ...
Mark's user avatar
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What are major obstacles that OOL research still has to overcome in order to come to a full understanding of how life could have arisen from non-life? [closed]

Dr. James Tour recently uploaded a video titled Dr. James Tour vs Dave Farina | Are we clueless about the origin of life? #abiogenesis. The description in the video says: Join us for an exciting ...
Mark's user avatar
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On the Origin of Homo Sapiens

Paleoanthropologists are certain Homo sapiens originate from Africa. However where in Africa is still contested. Could you give the reasons why it is thought that Homo sapiens evolved in Eastern ...
David Okogbenin's user avatar
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Where in Africa did Homo sapiens evolve from? [closed]

I’m aware that the possible oldest homo sapiens fossil was found in Morocco. The vast majority of our fossils however is found in Eastern Africa. In recent years,a controversial study on mitochondrial ...
David Okogbenin's user avatar
3 votes
3 answers
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Does the Miller-Urey experiment explain the origin of life?

According to the Miller-Urey experiment, the early earth atmosphere could have supported the formation of amino acids. This could provide an explanation for the origin of life. However, I do not ...
animul's user avatar
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Do we find protein not of cellular origin in nature?

I read once that we have two sources for proteins: Protein that is made in cells Protein that is made in labs However, based on Miller–Urey experiment, it's argued that amino acids can be made from ...
Saeed Neamati's user avatar
2 votes
1 answer
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When life first formed in earth's ocean, was it salty yet?

Do we have any tangible proof, e.g. by studying fossils of primitive life forms, that during their time the ocean was already salty, and at roughly similar levels to today's, or on the contrary, that ...
user209974's user avatar
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1 answer
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A question about entropy and Thermodynamics

According to the Second Law of Thermodynamics (also known as the laws of conversation of energy and mass), anything is an isolated system cannot increase in complexity. For example, a wearing suit ...
Turk Hill's user avatar
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Why is it that evolution of organisms had oxygen as their life-supporting gas?

On Earth, gaseous N2 is abundant. However, life began by dealing with O2 and CO2. What can be considered the major reason for life developing in such manner?
user59125's user avatar
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How do carbon 13:12 ratios confirm the biological origin of oldest microfossils?

I was reading this article about how Schopf and Valley’s findings in 2017 confirmed that the 3.5 billion–year-old microfossils found in the Apex chert of Western Australia are indeed remnants of ...
WillG's user avatar
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Will our biological bodies be changed after we’ve occupied and settled Mars? [closed]

I had this question in mind for very long time, and I could not find a clear answer on the Internet, so I was hoping that you might know the answer. If we will bring life to planet Mars and a few ...
Alex A's user avatar
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3 answers
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Does Pasteur's experiment contradict an origin of life?

To my understanding, Pasteur’s experiment demonstrates that life is only made from life. If this is true, then how could origin of life (aka. abiogenesis) ever have happened? It seems to me that ...
pavle's user avatar
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Are these 3.5B year old fossils the oldest on earth?

The following commentator writes: Researchers at UCLA and the University of Wisconsin–Madison have confirmed that microscopic fossils discovered in a nearly 3.5 billion-year-old piece of rock in ...
hawkeye's user avatar
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