Evolution, Morphology and Exobiology

While men are composed primarily of grunts, recent research has found that women are composed largely of hmm-ing sounds. The science on this seems very solid, and a huge population study across many demographics and and nations, conducted by the Trondheim Polytechnic Institute of Technology Institute, found that this is the most reliable indication of gender identity.

To provide some context for this question: I have 4 seawater treatments at different salinities. At 50% seawater there was a 51% increase in weight over a one hour period. At 75% seawater there was a 26.9% increase in weight over 1hr. 100% seawater = 6.18% increase over 1hr. Finally at 125% water, there was a 7.25% decrease in weight over 1hr. I understand this has to do with osmolarity. The species in question are euryhaline osmoconformers, I have a very vague idea, but would very much appreciate some assistance in understanding what is happening here 😅 Any help is welcomed and appreciated! Thanks for taking the time to read this post.

Can someone provide me examples of species from the following groups: - euryhaline/stenohaline osmoconformers - euryhaline/stenohaline osmoregulators Examples from those 4 different groups would be much appreciated, as I am struggling to find info on these I understand mussels to be euryhaline osmoconformers, so that's one example but if anyone could provide examples of other euryhaline osmoconformers (as well as the other 3 groups), that would be much appreciated Thanks for taking the time to read this

What humans will look like in the future? Very scary? Why are they not spending millions of dollars every day to try to stop this? This just terrible how humans will look like in 50 million years from now. Why are the scientist not trying to come up with new technology to counter this? https://geekologie.com/2012/02/fugly-what-humans-will-look-like-in-50-m.php Just ugly looking what humans will look like in 50 million years from now. http://www.geekologie.com/2012/02/01/future-humans-2.jpg There also this one other website saying what humans may look like in the future. Very ugly looking . Very ugly looking. Is This What Humans Wil…

Human mothers have a hard time giving birth to babies compared to other mothers in the animal kingdom because human babies' heads are so big. One often reads that this is so because we humans have such big brains. But what does grown-up brain size have to do with baby brain size? After all, the huge human brain ultimately comes from one single cell, the zygote, so why don't human mothers simply give birth earlier? The brain can grow as much as it wants after birth, so why does it have to be already so big at birth?

This question assumes that the LUCA hypothesis is correct: that all organisms now living on earth are descended from a single organism (the precise age of which being debatable and not germane to this question, but we can assume for the sake of argument that it was prior to 3 billion years ago). Carl Woese's theory that LUCA was "a communal, a loosely knit, diverse conglomeration of primitive cells that evolved as a unit" also does not change the nature of the question. What has prevented an individual, single celled, DNA-based organism, essentially identical to the LUCA, living say 500 million years ago, from producing offspring that successfully survived to the pre…

This question appeared in another thread, but it was OT there, so I post it anew. When we find a promising but sterile world, shouldn't we throw some archaea there with a purpose to spread life? After all, if / when we all go extinct here on Earth, then 4 billion years of evolution will go down the drain. This way we would be instrumental in saving the life. Nobody on Earth but us is capable of doing so.

Genes can mutate in about 7 ways, namely Missense mutation Nonsense mutation Insertion Deletion Duplication Frameshift mutation Repeat expansion In each of these mutation types, there are multiple possibilities, for example a deletion can happen in any portion of the gene and it can be small or large. All in all, there are at least hundreds of thousands of ways in which an average gene (that can build protein of 200 - 300 amino acids) can mutate. Only a very few of these mutation would be beneficial while most of them will be harmful. To think that random genetic mutations kept leading to beneficial changes over …

I've observed this little arrow crab "asking" the octopus to move away from the crevice behind it which was the crab's place. Or, it was how this interaction looked to me.

Im not sure if this is the right place to ask, the right category, the righr dorum etc. Also im only 15yo so dont explain in too professionam terms please. But ive always wondered this... When people bring up searching for extraterrestial life its always about if water is present on the planet, why is this? I know we live from water and so do fish, where we originally originate from and the bacteria they originated from lived in water but i dont see this as proof. Cant evolution on a planet without water just work with chlorine for example, or an element not even present on earth and thus not known to humanity. Same applies to distance to the sun to have a temperature swe…

While there are so many detrimental bacteria, there are no detrimental archaea. Is it so? Why?

I've noticed this alien looking "thing" slowly drifting along the reef at the depth of about 10 m. It was about 4-5 m long, 30 cm in diameter. A flexible, hollow tube, so one could put an arm into it. Which I did. Here are more pictures, with a dive buddy of mine for a scale, and some closeups: It took me a while to find out, what it was. Egg mass of a diamondback squid, Thysanoteuthis rhombus.

A very complicated field to grasp, it combines DNA with history and look what little we know on history. Easiest to explain evolution is like language which changes slowly over time, but slower? If a visus can change as fast as we've seen, while infecting new hosts, the size of species is related to the ease of evolution.

People, We have 3 arbitrary "races" of H Sapiens, Negroid, Caucasian, Mongoloid (according to sociologists ). Around the world's regions though, we see more than 3 different types of body features which the races are based on. Far east we see Asians as mongoloid (China, Japan, Pacific islands, etc), but just next door in India, we see people with different colors and facial features. Which race are they? Same thing in Europe, mostly Caucasian but just in N Africa (Libya, Algeria, etc) we see what many would call Arab, not Caucasian, nor Negroid. The India/China border mystery is most puzzling to me. How could evolution of man explain that difference in facial…

Hello all, I live in Birmingham, UK. At 10pm on 17th July 2020 an aerial fireball object fell from the sky, broke apart near our house, and showered rocky fragments on the garden and drive. We heard it happen and 2 CCTV caught it. I've been finding more pieces since, and have had quite a bit of analysis done on it, including SEM & EDX, petrographic, and bulk composition, and still don't know what the material is! Can anyone weigh in what the odd biological structures are that I'm seeing on/inside some peices, several images below? I have loads more details to share if anyone wants more! Any help is greatly appriciated. Cheers! -----…

Since the child inherits genetics from both men and women, there should be a convergence of their signs leading to the destruction of dimorphism. That is, for example, the growth of a man should decrease on average, and women, on the contrary, increase. Why is this not happening?

I wonder when the organisms that began to live in the dominant hierarchy arose. Anyone know any sources or books about hierarchical origins? structures in which, for example, people live, and what organisms, which ancestor started to show such a system

Human construction 175,000 years ago in Europe, that is, from Neanderthals... http://elpais.com/elpais/2016/05/25/ciencia/1464175777_166364.html 300m away from the entrance of a cave in Bruniquel, France, a wide circle seems to be man-made of broken stalactites and stones. Which changes much knowledge: The oldest constructions known to us were 100,000 years younger They were made by Sapiens Sapiens, never by Neanderthalensis Neanderthals were not known to go deep in caves Of course and obviously, the authors tell "symbolic or ritual use" as usual. An excellent way to avoid contradiction. Well, I do take the risk of proposing a use. It was a reservoir of drinkin…

Hello everyone, I just installed TpsDig and TpsUtil and l followed youtube tutorials however after l turn my text file into a tps file and use my photos as input source, and the tps file as output source and I then create, when l open the tps file, l can't find the text " LM=0 ..... " however this window pop up again and again, can anyone please tell me what the problem might be?

As a preamble ,I have a memory (an indirect one at this stage) of "struggling" to express a thought but realizing that I had no words/language ...was I in the womb perhaps or just popped out ? Again,a year or two later I had a dream whereby I awoke in the middle of the night and attempted to get out of bed but each direction (of 4) turned out to be the wall (I went back to sleep) [/preamble] Anyway,what I want to ask is "What is the evolutionary origin of thought?" This is my hypothesis.It arose from sensory inputs and was the first living organisms' attempt to make a note of a particular observation. On its own any sensory input lacks…

Hello everyone, For a little while, I have been wondering about human parthenogenesis. Is it really possible ? Thanks, D. https://en.wikipedia.org/wiki/Parthenogenesis

A puursit of evidence to support a hypothesis rather than the pursuit of data to explain a observation ...I too have collection of numbers and ideas that support the possibilty of faireys ....

Why is astrobioligy not in the speculation bin ...

Life exsits because it exsits here .. it's not special so it must happen every other week in the universe ..there is that many blinking planets out there it just must exsit by maths and science to think it can not exsit is not worthy of question or reason..they would not have made close encounters of the third kind if there was not something to it ...are they suggesting Spielberg is daft ...?

The process that produced biological lifeforms on earth (Abiogenesis) remains unknown however we can logically presume the process was not instantaneous but was incremental in time and subject to the initial available elements and compounds afforded by our solar systems birth which again was subject to the available ingredients of the nebula that produced it ..and that too was the product of the unique galaxy it came from ... Prebiotic material's So ,as of yet a undetermined, mixture of various chemical compounds was subject to it's own chemical reactions with each other and physically brought together and kept apart by physical mechanisms and circumstanc…