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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 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
179 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 ...
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6answers
241 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
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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
124 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 ...
5
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3answers
115 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 ...
5
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3answers
122 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
181 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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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
131 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
239 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
156 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
205 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
145 views

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
625 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
562 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 ...
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6answers
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What type of feet should semiarboreal humanoids have?

My semiarboreal humanoids have a build quite similar to humans, apart from some more specialized arboreal adaptations. They live in rainforests quite similar to the Amazon Rainforest. Though trees are ...
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1answer
102 views

10,000 years in the future, after living in a constantly, but not extreme radioactive environment, what might humanity look like [closed]

The idea is that this has been tens of thousands of years in the future. At least one nuclear bomb has been going off every fifty years or so. Humanity at this point is surviving in below average ...
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6answers
297 views

Pros and cons of hermaphroditic vs sexual species?

Between a species that is hermaphroditic and a species that has males and females, then what would be the pros and cons of either one from a biological standpoint? Anything not regarding the biology ...
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5answers
222 views

Rock crushing hands, how to make it possible?

A species of humanoid creatures with a strange skull structure and huge horns has somehow immense strength in their hands. The rest of their body seems to be strong in proportion to their weight and ...
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7answers
1k views

Extreme adaptation: evolutionary narrative for Vantablack-like skin pigment

Premise Inhabiting my earth-like world will be humanoid beings that have a skin tone that is as dark as Vantablack. Let's assume these human-like beings share the same ancestry as humans and we can ...
3
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2answers
100 views

Plausibility of another extremely intelligent species evolving who finds the remains of our existence and emulates our society

I've been thinking on the concept of the human race dying off (the reason doesn't matter), but most of the other living species on the planet survive. Although we die off, the remains of books, the ...
6
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1answer
211 views

How would endo-skeletal systems adapt to the atmospheric pressures given?

Surface gravity: 1G Info regarding of altitude, pressure, and atmospheric density: ...
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5answers
210 views

Anatomically Correct Humbaba

In ancient Mesopotamian mythology, Humbaba was an evil giant slain by the hero Gilgamesh in the famous Epic of Gilgamesh. In the epic, there was only one Humbaba, but for the purposes of this question ...
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4answers
280 views

Anatomically correct Panotti

Panotti so called from the Greek words πᾶν and οὖς for "all ears", were a mythical race of people, described as possessing large ears that covered their entire bodies. In the Natural History, Pliny ...
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1answer
129 views

Could cloak wings actually evolve? [closed]

There are creatures in fiction that use their wings as cloaks: Draga in Stargate Infinity, Big Chill in Ben 10, and the gargoyles in... you know. My point is, can any of you see this evolving ...
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3answers
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Why would unicorns only let virgins ride them, and bicorns refuse to let virgins ride them? [closed]

How to explain the fact that unicorns only let virgins ride them? Why does the unicorn even care if the rider is a virgin or not? And why do bicorns do exactly the opposite? Bicorns won't let ...
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1answer
108 views

How could monopods evolve? [closed]

In Wayne Barlowe's book Expedition he has some creatures who have become monopods, or only having one foot. They use it to hop through the dense air. Since the author never really got into the details ...
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24answers
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Why would magic wane? It's so useful [closed]

It's a fairly common theme that magic was a more powerful force in the past but as we come into modern times it has got weaker and maybe extinct. But why? The ability to use magic would be a huge ...
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3answers
111 views

Anatomically correct metalhead, part 2 - physiology

In the Land of Metal, there exists a tribe that has upheld the gospel of Manowar with such zeal that it modified their bodies. Metalheads descend from humans, and may look human at a glance. A more ...
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4answers
343 views

Anatomically correct Sea Boar

Wild boars are well known for their large, bulky body, their aggressivity and their tusks. They are animals from which a predator would gladly stay away if some easier prey is available. And, last ...
57
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4answers
6k views

Anatomically correct metalhead, part 1 - headbanging

In the Land of Metal, there exists a tribe that has upheld the gospel of Manowar with such zeal that it modified their bodies. Metalheads descend from humans, and may look human at a glance. A more ...
6
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3answers
284 views

Potential adaptions / features for life adapted to the level of atmospheric pressure given?

Atmospheric composition: | 2% Trace gases | 58% Nitrogen | 26% Oxygen | 11% Argon | 3% Carbon dioxide | Average surface temperature: 36 degrees Celsius Surface gravity: 1.36x Earth gravity ...
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7answers
2k views

An animal that is physically separated into multiple parts

One of my fictional planets (which is largely terran in nature) is notable for an unique animal. Said animal is a dangerous predator that is notable for several things: It is physically separated ...
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23answers
12k views

Make slimes great again, but how?

Slimes are seen as merely base-level enemies which don't really challenge the heroic main character, the Chosen One. My question is how to make slimes incredibly powerful without using magic. They ...
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1answer
91 views

Horns on humans [duplicate]

I know this has already been asked but I did not quite understand the science of it. Say a mutation after birth leads to a person evolving horns. Could this trait get carried along genetically or is ...
2
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2answers
179 views

Can my mermaids work?

Looking to how I can make Nagas and Mermaids able to exist and evolve in my story, I came across this post which explains how Nagas could evolve from humans: Anatomically Correct Naga In the top ...
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6answers
130 views

Extremely heterogeneous life

All life on Earth is surprisingly homogeneous from a biochemical point of view. Every organism known to us is primarily built with carbon-based molecules that also contain hydrogen and oxygen, mainly ...
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1answer
113 views

Hive Minds - Part 1: Genesis

EDIT: As suggested by L.Dutch, I turned the original post into a series of its own. Some Context A "Hive Mind" is an aggressive type of shared consciousness (for more information on shared ...
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3answers
136 views

Shared Consciousnesses - Part 1: Genesis

EDIT: As suggested by L.Dutch, I turned the original post into a series of its own. Some Context Though the name "Shared Consciousness" is pretty self explanatory to me, the best I can do to ...
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2answers
206 views

How would humans look after living many generations on a terraformed Mars?

Let's say humans moved to Mars and have lived there for millions of years. Mars is of now uninhabitable, though in this case some terraforming has happened. The poles have been nuked to release ...
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2answers
143 views

Growing a third arm

Since having (eg.) two arms is a result of evolution, how can we, considering modern technology, force embryos to grow another limb? Polymelia is known to me, but it is considered a birth defect. I ...
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2answers
139 views

Can Mollusks Develop Bone Independently?

When one thinks of a shelled cephalopod, odds are high that the first thing to come to mind are the ammonites. They were one of evolution's success stories, thriving from 400 to 66 million years ago. ...