Questions tagged [biology]

For questions about living things. Does not exclude aliens, but additional information is usually necessary (consider using "xenobiology" instead).

Filter by
Sorted by
Tagged with
11
votes
4answers
2k views

If quadruped mammals evolve to become bipedal will their breast or nipple change position?

As the title says, you know stuff like minotaur, lycanth or werewolf, cat or dog folk, etc especially for the female specimens. I want to know what happen if quadrupedal mammals which usually have ...
1
vote
1answer
67 views

Life in Jupiter-like conditions? [duplicate]

In a neighboring star system to my Conworld, there is a jupiter-sized planet that many of the species believe to harbor life. The star it is orbiting is a red dwarf, and the aforementioned "Re-Jove" ...
1
vote
1answer
145 views

What accommodations would a giant need?

I'm making a human female who's size was multiplied by 10. I need to know what sort of accommodations she'd need to make up for any disadvantages. This is in the modern day, so 21st-century medicine ...
5
votes
7answers
274 views

How would a military counter the use of genetically modified insects used to defeat CBRN protective gear?

One military has developed insects with strong jaws capable of chewing through the weaker parts of CBRN (Chemical, biological, radiological and nuclear defense) gear and then injecting neurotoxins ...
3
votes
1answer
191 views

How long to recover from muscle atrophy?

For context, I'm currently working on a short story series centered on a young man living in a dystopian America. This U.S. government keeps its 'undesirables' in medically-induced comas (long story ...
5
votes
3answers
155 views

Would a life form with the intelligence of a human but without an appendage for manipulating its environment be able to have advanced technology?

On another planet there is a life form that has the same level of intelligence as humans on Earth, but it has no appendage to manipulate its environment. It has similar social structures to humans ...
8
votes
1answer
101 views

Rib size to body size conversion

In lots of barren, deserted or otherwise destroyed landscapes, there are bones of long dead animals to be found. Sometimes, it's a skull, sometimes, these are rib-cages, or ribs alone. And ...
8
votes
2answers
243 views

Could an octopus ride a bicycle?

I'm imagining a scenario where there is a conflict between humans and intelligent octopuses. The humans' main mode of transport is the bicycle. The octopuses decide to stage a night raid whereby they ...
25
votes
9answers
7k views

I need a disease [duplicate]

I am struggling to find a disease/medical condition for my character. My character is 16-year-old female with a younger sister that doesn't have the disease. If you could please help, here is the ...
11
votes
5answers
465 views

What minerals that are more durable than calcium would be suitable for bones?

Edit: I am asking in the context of alien life, should have specifyed that to begin with. I have many ideas for fantasy/sci fi races, and one that I kept coming back to is a species with bones that ...
6
votes
8answers
267 views

Could a medium sized mammal in the order carnivora evolve to be bipedal?

In the movie Guardians of the Galaxy (and a few others), we meet a bipedal raccoon known as Rocket (who I am aware did not evolve to be bipedal, but I am using him as an example). I honestly love the ...
8
votes
1answer
138 views

Can the human body hypothetically be magnetized/magnetically aligned?

I was thinking about how an MRI uses a strong magnetic field to align the spins of hydrogen atoms in the body. What I was wondering about was if the human body experienced a magnetic field much ...
9
votes
4answers
1k views

Pre-plastic human skin alternative

In my pre-plastic world there is a killer who removes unblemished skin from their victims and replaces it with a non-human 'skin', so that one can't tell the replaced skin from the remaining human ...
7
votes
1answer
133 views

Is muscle plasticity the same thing as when muscles regenerate from wear and tear?

Information I am writing a fantasy sci-fi, that is almost the same as our reality, the only difference being humans in this world are capable of using drugs (serums in their world) to improve their ...
6
votes
2answers
1k views

Air bladders in bat-like skin wings for better lift?

Answers to this question note that human (and by extension mammal) wings would use naked skin instead of feathers, as we see on bats. However, with feathers, birds can have wings with shaped more like ...
10
votes
6answers
2k views

How to achieve cat-like agility?

In my world there human-animal hybrids. My protagonist is a snow leopard-human girl (outwards looks almost completely human, except for the tail). These hybrids have been created through experiments, ...
5
votes
2answers
338 views

What range of colors is it physically possible for a humanoid race's skin to have? [closed]

My story takes a sort of Shadowrun-esque approach to the concept of fantasy races, in that all members of fantasy races are, or are descended from, former humans transformed by magic, though in this ...
14
votes
13answers
3k views

How to make an animal which can only breed for a certain number of generations?

What would be the best way in which to genetically modify (or create through some other method) an animal which breeds normally for a certain number (50?) of generations before becoming sterile? ...
7
votes
4answers
402 views

How can a person become completely mute without external indications?

I have searched for a while now, but I cannot find a definite answer. A character I am writing has been captured by the antagonist, operated on and released, now completely mute. I've looked ...
6
votes
3answers
273 views

Most effective melee weapons for arboreal combat? (pre-gunpowder technology)

The creatures I am working with are primate-like, hexapodal aliens with a terrestrial/ arboreal lifestyle. On flat land they are able to walk bipedally, freeing up their top 4 arms for manipulating ...
8
votes
3answers
538 views

Would color changing eyes affect vision?

I am writing a medieval fantasy story in which there is a race of humanoids who have multicolored eyes. Their eyes may change to bring out one color or another if they are experiencing very stressful/...
1
vote
12answers
524 views

How could a same sex couple have children?

In my current work, I want same sex couples to be fully integrated in society. As it is set in a medieval fantasy world, survival of the human species relies on having children, so same sex couples ...
10
votes
5answers
302 views

How to justify frogs taking over?

A cool thing to imagine would be a world where the land was dominated by megafaunal frog-descendants, as it is/was by mammals today, dinosaurs before the mammals, and non-mammalian synapsids and ...
1
vote
0answers
58 views

How would I build a civilisation of multiple worlds around multiple suns work? [closed]

I’m building a group of magical civilisations, in which there are seven suns, orbiting a much larger sun, each with their own planets. There are forty planets in total. Some are moons orbiting gas ...
3
votes
7answers
681 views

What items from the Roman-age tech-level could be used to deter all creatures from entering a small area?

Please assume the following: There is a item on the ground and I want nothing but bare earth touching it. I cannot move the item myself. The item is impervious to fire. I cannot afford to guard ...
3
votes
4answers
172 views

What would a bioengineered human-predator look like? [closed]

Read (and watched) 'After Earth', where humanity has fled a dying Earth to colonise a new world. Unfortunately, for whatever reason, some intelligent aliens decide to periodically send waves of ...
5
votes
1answer
180 views

Is it possible to create rage virus from 28 Days Later?

In 28 Days Later the Rage Virus causes uncontrollable aggression and changes in personality. Is such virus even possible in principle? I'm not talking about rabies but rather about a genetically ...
3
votes
2answers
209 views

Making iron tools from blood [closed]

So, I read a while ago several threads about making iron objects/blades from blood. In my conworld there are giant predators that would, according to my calculations, have enough blood so that 12 of ...
-3
votes
3answers
232 views

Are atoms present in the vacuum of space?

I'm currently writing this story where an intelligent lifeform, instead of human eye-sight, is able identify the chemical composition of their surroundings, by detecting and "mapping" all the atoms ...
8
votes
5answers
219 views

Living nests for insects - Part 1: Optimal Hive shape

I've been playing with the idea of living nests for insects for a while now to help populate my worlds. The idea is that they don't build a static nest out of wood pulp and other material but have a ...
43
votes
17answers
9k views

For what reasons would an animal species NOT cross a *horizontal* land bridge?

In my worldbuilding project, 2 continents located on roughly the same latitude are connected by a land bridge. Both sides of the bridge are surrounded by a temperate grassland, and the lack of seasons ...
12
votes
6answers
3k views

Lethal sonic weapons

Sonic weapons are frequently used by military circles as non-lethal irritants to deter opponents. My question is; could a naturally evolved organism kill, or at least incapacitate, small prey using ...
9
votes
7answers
611 views

What could justify an animal photosynthesis?

Photosynthesis does not provide enough energy to allow animal activities on its own (see this post for example). But can we think of a species using photosynthesis as a secondary energy source? Here ...
6
votes
4answers
503 views

Uplifted animals have parts of their “brain” in various locations of their body. Where?

Looking at the case of Mike, I realized decentralizing the brain might not be infeasible. The idea is if Horus, the brown falcon, doesn't have enough room in his skull, then why not move various ...
9
votes
7answers
4k views

Is there really no realistic way for a skeleton monster to move around without magic?

One of the solutions I think is making the muscle go inside the bone, something look like an exoskeleton creature. either mechanical or organic making the artificial muscle developed inside the marrow,...
0
votes
1answer
313 views

How could an uplifted falcon's brain work?

In JJBA: Stardust Crusaders, there was a two-parter with a falcon stand-user, called Pet Shop, as the antagonist. The character kinda intrigued me, so I decided to steal it while Araki wasn't watching....
9
votes
2answers
207 views

Plants That Use Chitin in Place of Lignin

What would the appearance and structure of trees be like if they used chitin, instead of lignin, for cell walls? This is assuming that all other properties are basically unchanged. These trees would ...
11
votes
3answers
431 views

Mutually beneficial digestive system symbiotes

On an Earth-like planet, an intelligent species evolved in symbiosis with another species that lives in their digestive system and act as the microbial gut flora in humans do. What implementations of ...
7
votes
3answers
319 views

Are healing potions scientifically plausible?

As clarification we're talking about those common fantasy healing potions that recover health over time and their scientific plausibility. Here are some results from my research on the subject: ...
6
votes
6answers
337 views

In what sort of environment might a species with biological wheels evolve, and what would they look like?

So for a thought experiment I came up with the idea of a species that uses wheels for locomotion, sort of inspired by a species shown in His Dark Materials. Under what circumstances would such a ...
4
votes
1answer
107 views

Could an entirely (or mostly) hydraulic muscular system work in terrestrial vertebrates?

In Invertebrates, Muscular Hydrostat, which is a form of biological hydraulic, is used for locomotion. On Earth, (as far as I'm aware) no system exists where hydraulics perform in conjunction with a ...
26
votes
16answers
5k views

How can I prevent hyper evolved versions of regular creatures from wiping out their cousins?

The world is covered in mana, the life force that flows through all things. In certain places, this mana saturates to high levels. This affects the animals living in those areas, who absorb the high ...
4
votes
3answers
123 views

Modern Landscape Lacking Wood Decomposers

What would a modern landscape look like with the absence of lignin decomposing fungi, bacteria, and etc. What I mean is...would a forested area just become filled with fallen trees instead of a more ...
9
votes
7answers
2k views

Is it logically or scientifically possible to artificially send energy to the body?

Is it possible to use a power plant-like machine to create small amounts of electrical (or other) energy directly inside the human body, making it such that the human has energy for activity without ...
8
votes
7answers
295 views

How could a pair of twins be born with different abilities? [closed]

The demon king Sparda had an affair with a mortal woman. This union produced a set of twins named Dante and Virgil. However, a peculiarity occurred between their forming. The one called Dante was born ...
5
votes
2answers
185 views

Creating a scientifically semi-valid super-soldier, addendum: Metabolism

A while back Demigan had a running series of posts about various aspects biological enhancement for the purpose of designing super-soldiers with an element of (pseudo) science behind them. You can ...
16
votes
5answers
5k views

Could a dragon use its wings to swim?

I have three types of dragons; dragons that primarily fly, dragons that primarily run, and dragons that primarily swim, with all three types being able to do the other two things for a limited amount ...
2
votes
10answers
477 views

How could overclocking the human body actually weaken my abilities?

My name is Dio Brando, and I am the embodiment of masculinity. As the epitome of physucal male perfection, I am stronger, faster, sexier, intelligenter, and frankly just better than you in every ...
1
vote
0answers
57 views

Would it be possible for an analog of humans to evolve in the oceans - Specifically Octopoids? [duplicate]

Humans are tool users and through their ingenuity were able to hunt much larger animals than themselves. Specifically, I would like to have a race of sentient beings based on octopuses. They use ...
5
votes
3answers
240 views

How Could a Disease that Lowers the Intelligence of Humans to Non-Sapient Levels Exist?

I am curious if there is a way for a disease to negatively effect the intelligence of humans;reducing them to non-sapient ferals in the end. I am curious what such a disease would need to do to ...