Questions tagged [evolution]

For questions about the long-term change of a specific species, type of creature, or trait, usually through the process of natural selection and reproduction. Ideal questions focus on traits, not entire creatures. Consider also [creature-design].

Filter by
Sorted by
Tagged with
4 votes
9 answers
2k views

Could the theory of evolution become common knowledge in a society with medieval technology?

By medieval, I am referring to a planet equivalent to earth in 1000 AD. There is lots of variation, with places like Europe, the Middle East, China, and so on. It is not a "dark ages" for ...
www's user avatar
  • 891
3 votes
0 answers
63 views

Pathogenic Hive-Intelligence When Critical Mass is Reached

Could there be a virus or amoeba or protist or bacteria (or fungal but that is over-used in pop culture) that infects humans (and possibly other lifeforms) that by itself is not sentient but as they ...
Zip Zap's user avatar
  • 105
-3 votes
0 answers
33 views

Could fire-breathing lifeforms achieve sapience [closed]

Fiery organisms are rare in nature, but looking at their intellect presents a troubling picture for worldbuilders At the lower end we have humans, fairly intelligent organisms with only a basic ...
Ichthys King's user avatar
2 votes
1 answer
57 views

How would replaceable egg yolk evolve?

Those familiar with Alex Ries' Birrin project probably know that the Birrin as an alien species have unique eggs with a sort of replaceable egg yolk the parent needs to exchange every so often. The ...
LiveInAmbeR's user avatar
  • 10.6k
14 votes
13 answers
3k views

Why would dragons evolve to breathe fire?

Assuming dragons exist today on earth, and are four-legged, with wings, and cold blooded reptiles, what evolutionary purpose would there be in being able to breathe fire? This question is ignoring how ...
bruithel's user avatar
  • 309
1 vote
4 answers
455 views

Is extremely rapid evolution plausible?

In my world, set some time less than 100 years in the future, there have been changes in climate in many places due to global warming. Also, some organisms of extraterrestrial origin got loose and ...
Batperson's user avatar
  • 401
4 votes
1 answer
123 views

What kind of shell would protect against a a stabbing/piercing weapon on a predator's tail?

I'm making a fictional planet with a realistic ecosystem and I'm making a herbivore that is a shelled herd animal and is a main prey target for a carnivore which uses a barbed tail as a weapon. Its ...
That one silverwing's user avatar
2 votes
2 answers
199 views

Alternate Triassic dinosauriods

In a hypothetical alternate Earth where the Triassic extinction didn't occur, I envision dinosaurs taking to the trees to avoid the massive crocodile species that were prolific at that time (sorry for ...
Joe Smith's user avatar
  • 3,192
1 vote
1 answer
140 views

How would humans evolve in this star system?

Say that a large amount of humans settled in this system and have been living there for a few tens of thousands of years. The system is a binary system with two stars, a sun-like yellow dwarf and a ...
OprenStein's user avatar
3 votes
1 answer
463 views

Planet orbiting a star orbiting a black hole - can there be life?

Sagittarius A* is a black hole at the center of the Milky Way with at least 45 stars orbiting it. It weighs in at over 4.2 million solar masses and is likely rotating, which has interesting effects on ...
controlgroup's user avatar
  • 3,324
3 votes
6 answers
318 views

Could a bird evolve into something like a Gryphon?

Gryphons are a staple fantasy creature. But for my world I prefer creatures to have some grounding in realism. Is it possible for a bird to evolve into an effective Gryphon? Increasing number of limbs ...
Spoon's user avatar
  • 131
2 votes
3 answers
492 views

How strong would a realistically evolved orc be? [closed]

In my worlds Orcs are species/subspecies that branched away from homo sapiens in response to evolutionary pressure to be more powerful and more adept at surviving in a much more hostile environment. ...
Spoon's user avatar
  • 131
2 votes
0 answers
55 views

Polymelic hexapods – how and why? [closed]

In a seed world not too far away, a small mammal will have a bodily change that will one day give the draconic rank to its descendants, Of course if that is possible. polymelia is a birth defect in ...
M. S. Cancris 's user avatar
20 votes
9 answers
4k views

How could an aquatic race hunt land animals?

This is tied to my previous question!: How to allow a sentient cephalopod to live a long lifespan? An intelligent aquatic cephalopod with adults having roughly 15-40 cm long mantle. They typically ...
SuperYoshikong's user avatar
3 votes
1 answer
102 views

How would benthic marine organisms like shellfish and crabs adapt to a hypersaline environment? [closed]

In this world of mine, through a mysterious phenomenon called magick(tm) a God made it so all the salt in the world is either in a few location, alpine salt lakes or at the very bottom of the ocean. ...
A Shattered Day's user avatar
5 votes
3 answers
3k views

Furries' perks evolutionary possibility

I wanted to create a world inhabited by sapient canine-like Furries, but I asked myself: is it possible in evolutionary and anthropological plans? My main question is about tails and fur. There's a ...
Victor Vincent Volk's user avatar
3 votes
1 answer
179 views

How could an ecosystem remain stable for millions of years?

I am trying to create an isolated microcontinent where Cretaceous era dinosaurs/and maybe flora (specifically somewhere like Hell Creek) continues to survive with relatively little evolutionary ...
Cato's user avatar
  • 41
4 votes
8 answers
4k views

Why aren't the vampires smarter than us?

Based off this question. As stated in the previous question, a population of Homo Sapiens crossed over to a alternative Earth where they then diverged into two populations — one that is identical to ...
Seraphim's user avatar
  • 4,905
1 vote
3 answers
317 views

How would humans evolve if they began living underground? [closed]

So I am creating a world where some humans begin to live underground and in caves under mountains but I am struggling a bit with how they might evolve. My problem is that I don't want them to just be ...
LaserChild9's user avatar
4 votes
5 answers
1k views

Is this a realistic evolution for a flatworm-like species?

I have made two simple diagrams, each detailing the difference between two of my genuses (yes this is on purpose); Kuroribranch and Ennapoda. Kuroribranch is extremely similar to an Earth flatworm. ...
AxobitMelodies's user avatar
12 votes
7 answers
3k views

How do serpentine aliens move their eggs to reach tall trees?

Imagine there lives a serpentine alien species on a hospitable terrestrial planet in a galaxy far far away, they are found around the swampy area and the entire place will become waterlogged during ...
user6760's user avatar
  • 47.9k
7 votes
1 answer
302 views

Can two species from the same genus but with a different sex determination system interbreed and have fertile (or at least sub-fertile) offspring?

In my futuristic world, there are two coelacanth species that are the daughter species from the famous West Indian Ocean coelacanth. One has the XY sex determination system (like humans, iguanas, ...
mammifereviolet4694's user avatar
2 votes
3 answers
263 views

Question about speculative human biology

What kind of evolutions would humanity have to undergo to be able to live comfortably on the moon or any other sufficently low-mass body? As I am aware that it can be bad for bones and the ...
DanceroftheStars's user avatar
1 vote
0 answers
68 views

How would future humans be able to evolve large heads? [closed]

In my story there are future humans that managed to build a time machine and for research purposes and decided to travel back in time to change past events from taking place. These future humans have ...
Blue Shark's user avatar
4 votes
3 answers
480 views

The Evolution of Flight by Six-Limbed Vertebrates

Among Tetrapods, flight has mainly evolved three times. Firstly among the Pterosaurs - on the front limbs. Then among the Birds - on the front limbs. And finally by bats - mostly dealing with front ...
StarshipVGer's user avatar
3 votes
1 answer
114 views

How reasonable is my hypothesis regarding ring-tailed orthostatic bipeds?

So, in my process of designing humanoid/humanesque sapient aliens, I often find myself wanting to have a species which are orthostatic (upright) bipeds like humans but which nonetheless have long ...
Choroflorocarbon's user avatar
15 votes
11 answers
4k views

What evolutionary pressure would lead to parrots or crows developing human-tier intelligence?

Several avian species such as African grey parrots or the New Caledonian crow have demonstrated tool use, the ability to use new information in separate contexts, and other types of cognition that ...
Qwokker's user avatar
  • 471
-4 votes
2 answers
147 views

What are some evolutionary bugs in the human genome that could be ironed out by a god that is essentially intelligent evolution? [closed]

In my setting, humanity's gods are real and benevolent, but not omnipotent. They did not create the human species, but rather showed up early in its evolutionary history (equivalent of 300 kya in our ...
MarkKaiya's user avatar
0 votes
2 answers
166 views

How can erect intelligent hyenas evolve?

I am writing a story about a man who survived a plane crash and found himself on a desert island after some time finds out that he got to another planet, and then there he meets a reasonable upright ...
Frank Thompson 4's user avatar
6 votes
2 answers
390 views

Possible reactions for Artillery Plants?

I am looking for a chemical reaction which can generate a lot of Gas in a short period of time, on the order of seconds, to build up pressure and allow a plant to propel a seed like projectile. The ...
ErikHall's user avatar
  • 2,456
8 votes
2 answers
303 views

What is different about nocturnal humans' European manor houses?

Edit: Originally I asked this question about "houses" in general, but several comments made it clear to me houses was too broad a scope. So I've edited this question to restrict it's scope ...
Fictotum's user avatar
  • 319
2 votes
1 answer
138 views

What could cause super-strong hair?

In the anime Hunter x Hunter (and others, I presume) a character is shown as having super-strong hair, strong enough that a single strand could be tied around a wounded arm to stem the bleeding. I ...
Fictotum's user avatar
  • 319
0 votes
3 answers
151 views

How large of an initial population would it take for these new traits to average out into the standard population of the world?

Let's say, many years ago, hybrids between humans and other mammalians were created and introduced into the world for various purposes. They have the same cognitive abilities as the other humans, and ...
Hal Cyon's user avatar
3 votes
1 answer
213 views

Would isolated populations of humans still be the same species after a million years?

Let's say we drop a few hundred thousand people on several different planets. We'll have intentionally picked the planets to be similar in physical attributes (temperature, gravity, etc.), have ...
Zags's user avatar
  • 2,717
2 votes
2 answers
393 views

Feasibility of a convergent neural code across species?

I've got a sort of "mind-reading" system involving interpretation of electric fields/impulses in the brain, basically an advanced BCI (brain-computer interface), but the key point of this ...
inkwell87's user avatar
  • 939
4 votes
2 answers
143 views

Living in natural satellite having an orbital period of 90 earth-minutes to a gas giant that covers all light. How would animal hunters thrive?

Imagine a earth-like planet where life is beginning to thrive at the bottom of the ocean. So far it is an elegant carbon-based lifeform, not different than the one that has burst in our earth. But ...
Tiago Emanuel Monteiro's user avatar
2 votes
4 answers
142 views

Which natural process could make the surface of a planet temporarily uninhabitable for some, but habitable for other species?

I want to tell a story about two sentient species inhabiting the same planet, but never meeting. Essentially, some kind of random event (every couple of days up to every couple of months) causes ...
C4X's user avatar
  • 23
3 votes
5 answers
428 views

What evolutionary pressures would lead to Canis major?

In my world, there is a species of canid named Canis major, commonly named giant wolves or giant coyotes or giant dogs (the name was based on a famous constellation). They are the world's largest ...
mammifereviolet4694's user avatar
4 votes
4 answers
580 views

What protein could humans lose to become more carnivorous?

A more developed version of this question. The Premise As in the original question, 100k-200k years ago a population of homo sapiens ended up on an alternative version of Earth through a rift that ...
Seraphim's user avatar
  • 4,905
9 votes
4 answers
2k views

How credible is an extremely lethal virus dying out due to genetic inheritance patterns?

As a preface, let me apologize to knowledgeable people if things I say make them wince, I have no genetics or virology background whatsoever and my science-speak is taken straight from Wikipedia. The ...
Kubler's user avatar
  • 465
5 votes
3 answers
197 views

Is there any plausible way for dry-vacuum based biology to evolve?

Basically instead of being what we would call wet nanotechnology which is what our biology could be described as, imagine if you will, organisms that evolved from 'dry nanotechnology' who are native ...
Demiurge777's user avatar
0 votes
1 answer
77 views

Plant life on a planet with extremely bright "moon"? [duplicate]

The planet in question is part of a Binary Planet pair, both of which are tidally locked to each other at a fairly close distance (~129,000 km) from each other, meaning that the "moon" is ...
Foosic17's user avatar
  • 1,266
2 votes
4 answers
456 views

Evolutionary path of action/anime humans [closed]

In story I'm considering writing, a branch of hominid that had been trapped on another alternate earth after being crossing over through rifts are able to return to our earth after these rifts started ...
Seraphim's user avatar
  • 4,905
1 vote
1 answer
206 views

Can a plant or fruit evolve or be made to look as if it evolved to produce blood?

My question is Can a plant or fruit evolve or be made to look as if it evolved to produce blood? I want to have a story well a benevolent super being not a god a being with powerful tech; transplanted ...
dw7thdoctor's user avatar
0 votes
3 answers
283 views

What would cause protein shapes to be the same across unrelated species?

One sort of “rule” I’m working with in my world is that among carbon-based, protein-having species, even those from different planets with no shared evolutionary ancestry, proteins that may be ...
inkwell87's user avatar
  • 939
3 votes
2 answers
256 views

Biped species with trunk evolved to use for locomotion

So currently in my speculative evolution scenario, I have a creature with an elongated trunk that it uses for rock climbing. This species transitions to a savannah like lifestyle and I was wondering ...
Storme Clouds's user avatar
4 votes
1 answer
140 views

Gas giant ecologies with more realistic weather. Sky anchors

I've always enjoyed stories that explore ideas about life in the clouds of gas giants. The Algebraist by Banks is my favorite. Though one thing that never quite rang true to me about stories like The ...
futurebird's user avatar
  • 1,029
14 votes
10 answers
4k views

"Hard" SF reaction to "Soft" SF Aliens

When we consider what alien life might look like, it seems more likely that life would be, well, very alien. There is no reason to expect bipedal, human-shaped and human-sized creatures. Or to expect ...
futurebird's user avatar
  • 1,029
7 votes
1 answer
406 views

A planet *without vertebrates. (*mostly, restrictions apply)

I'm thinking about the evolutionary history of life on a world very similar to earth in many ways, carbon based life, life began in the seas, creatures like cephalopods, and arthropods, evolve. But, ...
futurebird's user avatar
  • 1,029
3 votes
11 answers
5k views

How can a matriarchal society be maintained?

Any matriarchal hierarchy is in constant danger: any male dictator wannabe would hit evolutionary jackpot with a succeeded putsch. (Stop giggling, Shenzi—human sexual dimorphism favors the males ...
Hauke Reddmann's user avatar

1
2 3 4 5
37