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
-1 votes
0 answers
94 views

Anatomically Correct Moonstrider [closed]

For my first entry into the Anatomically Correct series, let me present to you the moonstrider, one of the mounts ridden by the Moonshadow Elves in the Netflix animated fantasy The Dragon Prince: It'...
user avatar
  • 14.3k
2 votes
2 answers
139 views

Would humans crossbreeding with animal people cause more birth defects? [closed]

I am working on a world inspired by witcher where humans and animal like race live together. would for example, human crossbreeding with water dwelling humanoid cause something like mermaid syndrome? ...
user avatar
7 votes
4 answers
2k views

Can land plants absorb carbon dioxide into their leaves without the need for sunlight?

We all know by now that plants need light to absorb carbon dioxide--whether it be sunlight, moonlight or even artificial cave light. But what about total darkness, like a cave or a forest floor ...
user avatar
  • 14.3k
-7 votes
4 answers
105 views

How to create realistic alien evolution in a swampy planet? (Like dagobah from Star Wars) [closed]

Essentially, I’m curious to know what would be the most likely (semi-complex, multicellular) animal lifeforms to develop on planets with gravity similar to Mars and Earth.
user avatar
5 votes
3 answers
149 views

Blue star adaptation

If life did evolve on a planet around a blue star, what sort of adaptation could be expected? I so far have the autotrophs being yellow/orange or blue to absorb the light. I also thought the animal ...
user avatar
  • 2,640
1 vote
2 answers
70 views

Blue star vision

For sake of argument, let's assume life did evolve on an earth like planet around a blue star. I have this idea that the animal equivalent life wouldn't have color vision so to let in less of the ...
user avatar
  • 2,640
5 votes
3 answers
155 views

What evidence could reveal to aliens that their sun is the result of a binary star merger?

The answer to a previous question suggested life could have the time to begin and evolve on a planet orbiting a blue star if it was at first a binary pair that merged. The technical term is a blue ...
user avatar
  • 2,640
2 votes
3 answers
171 views

What might case cause the development of biological nuclear weapons as a natural evolutionary adaptation of a species?

Im doing a one-shot space campaign with some friends. One of the navigation hazards I wanted to add for my PCs was the system being infested with space Bourne biological life forms that, like some ...
user avatar
8 votes
4 answers
212 views

How can I bypass Bergmann's rule in cold weather populations of humans?

I am working on a setting with a large native population of humans who live in a year-round freezing environment, somewhat akin to the real world Antarctic. These humans should be as biologically ...
user avatar
6 votes
2 answers
124 views

How do I justify the evolution of merpeople within a few million years?

I'm creating a sort of fantasy world that I'm still trying to keep scientifically accurate (it's more alternate history than anything since I'm having it take place in our world with a few points of ...
user avatar
  • 537
10 votes
8 answers
1k views

What environments/pressures would incentivise/select hunting in pairs?

I'm trying to chart the roadmap of the evolution of a variety of fictional amphibian creatures which hunts in pairs. But, I don't know of many inspirations in nature where animals hunt in pairs. What ...
user avatar
4 votes
2 answers
343 views

How much could humans change in the span of 20.000 years? [duplicate]

So, in my world, humans were imported to the world about 20.000 years ago. The planet was terraformed to be an earth clone and has 2 Supercontinents. Basically, I need traits that could have emerged ...
user avatar
  • 51
2 votes
1 answer
54 views

Biological adaptations for tunicates to become terrestrial animals

I am currently designing evolution paths for tunicate which are a chordate invertebrate marine animal. In their larvae stage they are mobile and resemble tadpoles but in adult form some attach to hard ...
user avatar
3 votes
1 answer
127 views

How would human body evolve on a super-habitable world?

Assuming that a person can survive on a world that's super-habitable, with it's 1,5 atm atmosphere consisting in 38,4% of oxygen, with increased concentration of (~0,5%) hydrogen and (1,2%) carbon ...
user avatar
  • 65
20 votes
17 answers
5k views

How can plants reliably intentionally poison those that eat their fruit?

For sake of metaphor, I want to include a plant that bears fruit that is poisonous, with the intent that when an animal eats it, it will walk away and die within a few hours, such that their corpse ...
user avatar
11 votes
5 answers
2k views

What minimum percentage of the population can be allowed to reproduce?

A immortal dictator controls an island with about 1,000,000 people. Apparently, he's super into eugenics and wants the population of the island to be "the ultimate humans". Assume he can ...
user avatar
0 votes
2 answers
563 views

What would a realistic wood-eating animal look like? [closed]

For context: The location is Earth, several tens of millions of years ago. A rat-like mammal began to adapt to digest wood. Slowly, they're growing bigger and bigger, and they'll fill in the stead of ...
user avatar
  • 1,658
7 votes
2 answers
211 views

What are the evolutionary advantages to have facial hair for both sexes?

In my universe, there are sixteen living species from the Homo genus: anatomically modern humans, therianthropes, vampires, wizards, trolls, orcs, goblins, gnomes, ogres, dwarves, giants, halflings, ...
user avatar
4 votes
2 answers
142 views

How long would it take for humans to evolve on different planets?

Here’s the breakdown of my story: Humans have basically destroyed Earth, milked it of all its natural resources. We've set on finding new planets to find a new place to live. The result: The ...
user avatar
2 votes
2 answers
72 views

How long would it take for evolution to create creatures with same body but different brain of humans?

In a story I am writing, I want to have a creature that is physically very similar to humans, yet has a different brain (e.g. smaller size and smoother). How many generations would it take for ...
user avatar
1 vote
2 answers
161 views

How do we breed cats that can talk?

Are you fed up with never being sure precisely what your furry companion is pestering you for? Using selective breeding techniques & (initially at least) ignoring any changes to brain structures ...
user avatar
  • 7,201
3 votes
4 answers
115 views

A scientifically plausible explanation for an "explosion of shark evolution"

It's virtually a platitude among scientific studies that sharks have changed little over their 400 million year+ evolutionary heritage. On the one hand, sizes span from tiny varieties to leviathans ...
user avatar
3 votes
4 answers
160 views

How would these nocturnal humanoids evolve?

I've designed a race of humanoids for a standalone worldbuilding project, but I'm beginning to wonder how they could have evolved. They are very similar to humans, but differ in the following key ways:...
user avatar
2 votes
2 answers
93 views

How does an exploding dragon's scale work?

I'm designing a unique dragon called Vehement Dragon, I need it to be extremely hostile to all life. It evolved a trait that put it high up on the food chain, this is the only dragon whose scales can ...
user avatar
  • 45.9k
3 votes
1 answer
50 views

Cursorial Adaptations in Tentacled Quadrupeds

All animals in this world are derived from an anatomy involving a tetrapod-like foreleg with tentacle-like hindlegs. This means that the hindlegs are substantially weaker than the forelegs, especially ...
user avatar
  • 11.7k
2 votes
3 answers
83 views

An earthlike world is flooded with fantasy flora and fauna. What happens to the ecosystem, and how long does it take to recover? [closed]

Let's assume for the sake of argument that: It's a 50/50ish split between new prey/predators herbivores/carnivores being introduced. So already a bit imbalanced. The creatures/flora make sense ...
user avatar
9 votes
3 answers
289 views

How tall can trees get if water transport limitations are bypassed?

The setting is Earth, millions of years in our future. In this setting a species of tree has made an evolutionary leap, allowing it to bypass the water transport constraints currently thought to be ...
user avatar
  • 3,995
6 votes
2 answers
283 views

What would my phylogenetic tree composed of sixteen Homo species look like?

In my world, there are sixteen human species (mammalian species from the Homo genus): Anatomically modern humans (no explanation is necessary); Marine humans/Merfolk (they have a seal-like blubber, ...
user avatar
5 votes
5 answers
1k views

How would humans mutate in an urban enviroment? [closed]

How would humans evolve in an urban environment? Allow me to give some more details. Specifically on a small island, roughly at 800 square miles in size. Excluding beaches, parks, and other such ...
user avatar
  • 381
7 votes
5 answers
561 views

What evolutionary driver could produce life that are animated only by light?

Imagine an alien world populated by silicon based lifeforms, the mega fauna can only be animated by exposure to adequate lights from the star or the moon. This world concept is inspired by a ...
user avatar
  • 45.9k
11 votes
6 answers
4k views

What evolutionary pressures would lead to Gnomes?

In a universe I am creating, there are many living species of humans (mammals from the Homo genus) (for example, there are ogres, giants, merfolk, halflings, dwarfs, and goblins). One of them is ...
user avatar
6 votes
2 answers
241 views

What environmental conditions would cause large humans to evolve?

For most of our evolutionary history, we did indeed live in Africa - but not just the eastern savannahs, as previously thought: our biological ancestors were distributed everywhere from Morocco to the ...
user avatar
  • 163
11 votes
6 answers
3k views

Guiding a world to evolve herbivores that are smarter than carnivores

On "Earth" species that are higher up the food chain tend to have more advanced brains. I won't tell everyone what they already know, but just for illustration: chimps are capable of making ...
user avatar
5 votes
3 answers
287 views

What changes might happen if a group of people began living in a cave full-time?

I've got a fairly small community of people that, after a genocide, some survivors moved into a cave system. They've been living there for about 5 or 6 generations now and rarely leave the caves ...
user avatar
  • 51
4 votes
1 answer
142 views

Could Cacti Become Suited for an Arctic Environment?

The arctic is, essentially, a cold desert. Dry, doesn't rain much, little to no vegetation, but cacti persist in desert environments. Could they adapt their skills in a hot desert to survive in a cold ...
user avatar
-2 votes
1 answer
191 views

What are the evolutionary advantages to have epicanthic folds?

In my world, there are sixteen species that form together the living species of the Homo genus: anatomically modern humans (Homo sapiens sensu stricto), merfolk, angels, demons, ogres, giants, ...
user avatar
4 votes
3 answers
128 views

How long would a species have to have this brain symbiote to prevent early puberty?

So, a race of sapient aliens I designed for a series of short stories owes its sapience in part to a symbiote which lives in their brains and produces hormones that induce the brain to grow faster and ...
user avatar
0 votes
1 answer
92 views

How would plants evolve into motile organisms? [closed]

I want to build a speculative future world where the majority of animals on Earth are gone and have been replaced by plants due to convergent evolution. I want to know how these creatures might evolve ...
user avatar
1 vote
4 answers
220 views

How can humans evolve a single burning hand? [closed]

The environment is a temperate enclosed valley on earth (or is like Earth) that has caused the humans trapped in it to evolve different. Their size is normal. They gave evolved a gel that oozes on the ...
user avatar
6 votes
8 answers
931 views

How can these aliens evolve sapience without cooking?

So, I have a species of sapient aliens I'm designing, but I have one big problem: Cooking is widely (although not universally) considered to be a major factor in the evolution of sapience in humans, ...
user avatar
3 votes
1 answer
82 views

Can reconnection of continents be sufficient reason for the evolution of sapience?

So, the process that began the evolution of sapience in humans was ultimately triggered by a changing climate forcing chimpanzees into a drastically new habitat; I am trying to write about a race of ...
user avatar
-1 votes
1 answer
145 views

Harmonizing Lamarckism with Genetics [closed]

Many Science-Fiction worlds, whether or not by design, have their aliens arise by what seems to be a form of Lamarckism. While this is all well and good, these same worlds also make use of a lot of ...
user avatar
  • 11.7k
4 votes
2 answers
238 views

Are my "ZW humans" plausible?

I'm worldbuilding a human inspired species where females are larger than males. According to the explanations I've read about why that would happen with birds of prey, dimorphism comes from: Avoiding ...
user avatar
3 votes
2 answers
83 views

Grazing Adaptations in Many-Mouthed Animals

In a world I am designing, most animals have many mouths placed directly in their side. These mouths have two jaws like in sharks, and also have a small pair of palps for manipulating food, which act ...
user avatar
  • 11.7k
6 votes
6 answers
341 views

How could human-like intelligence evolve in a nonsocial, non-carnivorous species? [closed]

It seems like two potential motivations behind human ancestors' evolution of intelligence were their complex social groups and behaviors, and hunting behavior requiring more strategic thinking in ...
user avatar
3 votes
2 answers
116 views

Why would a species from the Homo genus have overwhelmingly B negative blood type?

In my story (go to see What evolutionary pressures would lead to Ogres?), there is a massive species from the Homo genus called ogre. They mostly have B negative blood type (I do not mean Rhesus null, ...
user avatar
7 votes
7 answers
202 views

Stopping a Disease from Evolving

Some evil scientist, let's call him... Dr. BBEG, has manufactured a potent, powerful disease. He has full control over the bacteria's genome now, but once he releases it... not so much. However, in ...
user avatar
0 votes
2 answers
112 views

Mammavian Integument [closed]

Mammavians are a common type of animal across many worlds, which have traits of both mammals and birds One trait they often have is a unique integument, which produces both mammalian hair, avian ...
user avatar
  • 11.7k
4 votes
3 answers
373 views

How to completely domesticate big cats while keeping them huge?

From what I've gathered from answers to a similar question, the big felines would need: a homing instinct, more sociability, an increase in "synaptic plasticity" whatever that means, a ...
user avatar
5 votes
2 answers
285 views

Nail to Claw: Evolutionary pressures for hominids to develop claws

In my question about carnivorous elves, one of the commentors pointed something about my elves that I had not really considered in depth before hand. My elves are a form of hominid, thus an ape. My ...
user avatar
  • 3,209

1
2 3 4 5
34