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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. Consider also [creature-design].

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How can animals develop a form of Inter-species coordination?

Cats in New York City are an invasive species that are a plague to the animal kingdom. It is well documented that these bloodthirsty psychopaths are responsible for the murder of billions of innocent ...
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3answers
881 views

A society in which the “family system” is similar to those of lions or monkeys

I envisioned a world where people are not bounded by marriage and females are free to choose those who they deem "accomplished" and have offspring with him. The males "occasionally" interact with the ...
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1answer
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Electric Universe: planetary system inside a Red Star [on hold]

Based on the Electric Universe physics a Red Star could harbor a planetary system within. How would life evolve taking in account that light would be almost constant in all the planets contained by ...
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2answers
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Humans under different suns

What would humans look like if they were genetically suited for life under a giant orange star like Iota Draconis ? These would be people who were genetically indistinguishable from humans from earth, ...
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4answers
82 views

Anti-decomposition mechanisms?

Suppose that due to some kind of magical force I'll leave handwaved, (non-sapient) organisms are able to practice necromancy, reanimating their fallen peers as undead bodyguards. However, the magic ...
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2answers
188 views

What is the science of fairy flight?

Assume these homo super-dwarf aka fairy and homo sapiens come from a common ancestor, and somehow they evolved a pair of wings and can do vertical takeoff. The average adult is approximately the ...
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1answer
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Could another species overtake us technologically? [closed]

Is it possible for another of Earth's species to catch up and overtake us technologically over the next million years or so? Assuming we survive that long as a species and our technology stagnates ...
2
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1answer
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Life evolving on a artificial Floating Island on a ocean world [closed]

I'm having troubles with developing my ocean world. Same size as Earth, same atmosphere and gravity. The idea is that on a planet with an endless ocean with no continental landmass. The only form of ...
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3answers
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Types of life on a planet in a sun-synchronous orbit?

Basically, a sun-synchronous orbit is where one side of an object is always facing a star as it revolves around it (much like our Moon is, which is where the phrase 'dark side of the moon' originates')...
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What are the exceptions to Natural Selection? [duplicate]

Consider a population where a low percentage of people (5%) posess a genetic advantage over the rest. In my fictional world, let’s assume this small percent of the population can wield magic while ...
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13answers
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Plausible reason for gold-digging ant

Medieval bestiaries describe a creature, a type of desert-dwelling ant that digs for gold. It was also said to be the size of a fox, but I'll ignore that in this question. Why would ants unearth ...
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3answers
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How do marine dragons evolve flight without any feathers and no hollow bones?

These dragons spend most of their lives in the ocean, however during the mating season they will migrate inland and gather together on a mountain top. Throughout the journey they will cease feeding ...
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6answers
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Art Critics in the Stone Age

In the stone-age world that I am building, I don't just want one-dimensional characters who are either hunters or gatherers. I want a great quantity of people including those who would have become art ...
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2answers
543 views

Could Gymnosperms Develop Fruits and Flowers Like Angiosperms?

Here is the scenario: A Paleo/Mesozoic mass extinction wiped out 96% of all terrestrial species, and the only plants that survived were as follows: One genus of conifer One genus of cycad One genus ...
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2answers
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Could fruit (specifically oranges) evolve into intelligent life? [closed]

Is it possible for oranges to become intelligent life while still retaining some of their essential qualities such as skin that can neatly be peeled off and reproduction through seeds and growth off ...
4
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2answers
176 views

Evolution adapted to technology

...kill every protohuman who tries to leave the African continent. This comment made me think about one question. Suppose you have robot guards, like futuristic lasers, who just shoot at any landing ...
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2answers
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Forced Evolution to Turn a Class I to a Class III civilization [closed]

So here's my idea: Every 2 years the class I civilization is inspected by an outside Class III civilization. If the Class I civilization has made progress then they will move on. If the Class I ...
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6answers
232 views

What changes to the livestock industry would slowly evolve the animals to become a threat to humanity?

We, humans, hold a lot of livestock. 19 billion in chickens alone. Cattle, sheep and pigs each also number over 1 billion. Currently these animals cannot evolve freely; they are selected on certain ...
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1answer
148 views

Why would a male marsiupial agree to accept responsibility for carrying half of his mate's joeys?

I'm looking to create a species of marsupial that is heavily K select, which is to say they put significant effort into raising their young after birth (both of them :P ) in which both the male and ...
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5answers
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Is there a reason for a humanoid species to be 'biologically' matriarchal with females being slightly more dominant than the males?

Following my last question asked regarding oviparous humanoids, is there a way for evolution to 'regard' females as the more dominant gender without going down that road, forming a heavily matriarchal ...
8
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5answers
300 views

Is there a way for human-sized oviparous humanoid mammals to produce young in eggs without going the full marsupial route?

As per my last two questions asked, I still have a niggling query left regarding a humanoid species in production. To further support their matriarchal theme through evolution, I have decided to make ...
5
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2answers
460 views

What alterations without drastically altering their humanoid shape nor horns, can I make to my species that lower the risk of neck snapping?

continuing from the question I had asked yesterday, I have had another query come to mind. For my humanoid alien species to possess horns, it would surely put forward the risk of being the shortcut to ...
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3answers
523 views

Aliens selectively breed humans to be bigger. How big could they get and still look human?

Can we go from this: to this: Suppose over millennia (or as long as it takes) humans on Earth are artificially selected by aliens to be big and healthy. Is there any theoretical reason that they ...
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4answers
241 views

Is it plausible for a being to possess a singular halo-shaped 'horn', while other members of the species possess two 'regular horns'?

I am currently working a humanoid roughly deer-like species in a sci-fi roleplay setting, and one of the developments I have had with such species has me stuck trying to explain it in a way that makes ...
13
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4answers
1k views

Full-body bioluminescence

A creature I am imagining is a small mammal about the size of a domestic cat which - through symbiotic bacteria which live in its fur - is covered its whole body over in blue-white bioluminescence, 24-...
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5answers
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How can humans naturally develop the ability to control their mental faculties while suffering the physical effects of fear?

Fear has been a helpful trait that has kept our race alive since back in the day. It continues to be necessary for survival as a species. However, it can be just as harmful. When faced with death or ...
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3answers
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What are plausible reasons for aquatic axolotl-like animals to walk on land?

In my world the resident humanoids evolve from beaver sized aquatic axolotls.The only land on the planet can be considered mountainous terrain. Imagine a volcanic crater where only the rim surfaces. ...
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3answers
202 views

How can I predict what the evolution of ants tends towards?

I want to add realistic elements to a futuristic environment I am working on. Realistically, the animals we know of today will change over time and it's more likely smaller ones would survive, so I ...
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2answers
230 views

A reverse centaur walks into a bar - Why the long face?

A centaur as we all know is a horse with a human head (and torso). I would like to consider a reverse centaur, which, for the purposes of this question, I will define to be a human with a horse's ...
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6answers
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What would birds look like if they used buoyancy to fight gravity?

What would birds look like if they did not have to fight gravity to fly? The question comes from the premise put forward by some that gravity is not real and that what holds us down is pressure ...
2
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6answers
283 views

Can humans be conditioned to become non-violent and forget how to defend themselves?

Okay, so here's a quick scenario. Humans over the course of time have been selected to breed based on how docile they are. The violent ones are exterminated and all outside sources have been shut out. ...
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2answers
142 views

2 weeks day, 2 weeks night, how would the sleeping pattern of the planet's dominant species work with a 28 'day' Day?

Okay, so I have this binary planet system. The main planet a bit bigger than earth with a size appropriate moon-planet. Both are habitable and with a humanoid species that evolved there. But, I know ...
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10answers
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What mechanisms need to be in place for an advanced, peaceful society to retain high testosterone levels?

While by no means a smoking gun, there is still a reasonable amount of empirical evidence on the notion that socialization and testosterone are negatively correlated. Archaeological Evidence From ...
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4answers
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The Galaxy has been colonised but why the big feet?

Far, far into the future, pretty much the entire Milky Way has been colonised by humans. The thing is that now the Empire has fallen, the technology of FTL travel has been lost in most places. Those ...
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8answers
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How to make variable super-soldier size the norm versus a single size

Imagine you can build your soldiers in a lab somewhere. You can control everything, and you've found a the ideal humanoid form (ignoring potentially better forms here). You could build them in all ...
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2answers
142 views

How would plants evolve with longer days?

(First post on StackExchange, hello world!) The project that I'm currently working on involves a Binary Planet system, both with life, although I'm only focusing on one. This planet has a climate ...
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3answers
146 views

What practical forms can a “branch-tailed” organism have?

So, I made the slight mistake of worldbuilding by starting off with just a planet's local sentient species and working from there. This species, the Trillek, have a more or less theropod appearance ...
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3answers
146 views

Could Multicellular Life Evolve Sans Cryogenian?

Prior to the Cambrian, there have been three separate ice ages--the Huronian, from 2.4 to 2.1 billion years ago; and the two Cryogenian ice ages, from 720 to 635 million years ago, split in such by a ...
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4answers
219 views

Evolution in dragons

I'm currently working on a world where there are two groups of dragons, Continent dragons and island dragons. The basic story is that long ago there was one massive population of dragons that lived on ...
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3answers
1k views

Is the Avian species from the game Starbound plausible?

I apologize if this question is not written up to standards, I am rather new to this site. I have been an avid fan of chucklefish's acclaimed sandbox title, Starbound, for a number of years now and ...
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2answers
158 views

Could a Nautilus Shell, Squid Gladius, or similar structure eventually form the basis of a Spinal column/Skeletal system?

Ok, so, some quick background... I'm not an evolutionary biologist or anything, but I'm helping a friend with some alien design ideas, and at least one of them she designed and wanted help to somehow ...
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2answers
269 views

What would humans need to sacrifice for a better sense of smell?

Humans have some genes that allow for a precise sense of smell, but they were turned off millions of years back, just like in many other primates. To name an exeption, lemurs are primates with a ...
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2answers
167 views

What are the uses of colour in a world where nothing can see?

In a previous question - How might kinetosynthesizing "plants" look? - I introduced a worldbuilding thought experiment of mine centered around a habitable moon, heated by tidal forces, which ...
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2answers
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Pangenesis and alien life

Darwin's hypothetical mechanism of inheritance was called pangenesis, whereby the body continually produced particles of information - gemmules - which aggregated in the gonads, and that that the ...
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5answers
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How advanced would human civilization get if it was destroyed by insects every 20 years?

In this world there has been a recurring population surge of ferocious insects every 20 years for many centuries. The setting is approximately our own time in relation to the existence of "cave men". ...
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3answers
228 views

What would be the usefulness of both arms and fins on a sea dwelling, amphibious organism?

I am currently designing a highly intelligent species for a sci-fi project I am working on. They are quite similar physically to prehistoric salamanders or similar amphibians, but I am having trouble ...
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3answers
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Do aliens gamble? [closed]

I have read a number of sources that indicate that gambling behaviours in humans are the result of evolutionary adaptations. If gambling is the result of the specific evolutionary history of our ...
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5answers
683 views

Tiny humanoids?

There are many tiny humanoids in fiction, the Arquilians of Men in Black, the Gargantians of Buzz Lightyear Star Command and a few others. This raises the question, is it possible for a humanoid ...
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10answers
2k views

Why do demons heal faster than angels? [closed]

Angels and demons originally came from the same source: the creator. God filled his angels with his essence during their sculpting, giving them powerful and immortal bodies. Their physical forms ...
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3answers
588 views

What kinds of metals will function as a blood base? [duplicate]

I've been working really hard for a while now on a race of creatures called Nordic mountain Valkyrie Dragons. They are large: around 7'ft tall, and 9'ft from nose to tail tip, and I'm trying to come ...