Questions tagged [biology]

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

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4
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6answers
6k views

What are the evolutionary advantages to size?

Small vs. Large! If you had nearly the same creature, and the only difference was size, what advantages and disadvantages would large size vs. small size have--beyond the usual--reaching leaves more ...
6
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4answers
511 views

What possible combinations are there for hexapods?

On Earth, life took on a quadruped body plan which has lead to many different sub body plans; 4 legged, 2 legs-2 wings, 2 legs-2 arms, etc. This has made me wonder what possible sub body plans can ...
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6answers
768 views

Is it possible to communicate through DNA?

Alternatively, could DNA be a language (the normal coding that exists within DNA to tell it what to build) that is capable of telling us anything. This question is based off of this article about ...
20
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6answers
4k views

How can I explain the pokemon version of evolution?

In Pokemon, each individual Pokemon “evolves” into a new stage of its evolution. A lot people claim that this can be explained using mere metamorphosis, but there are no mammals that go through such ...
6
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3answers
569 views

Gas-based circulatory system?

I'm making a species which has a gas-based circulatory system. How would one go about designing such a system, in which liquid blood is replaced by some kind of gas? What kind of blood vessels would ...
-2
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3answers
376 views

If a person has the ability to fully regenerate injuries in seconds, what would happen if a bone is broken? [duplicate]

Regenerating from cuts is fairly easy, because it just needs to create new cells, tissues, etc., until the opening is closed. But what about broken bones? Maybe new bone cells/tissues/etc. are created,...
5
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2answers
399 views

Biological explanation of age stopping in near-human aliens

There's a species called Foos. Foos are fairly similar to humans. In a primitive society, in fact, they would appear identical to humans in actual physical appearance, mannerisms, and base behavior. ...
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6answers
3k views

What would a Collective Consciousness look like?

The idea of a collective consciousness (Or Anthill) is pretty simple: instead of cells you have small sentient animal that make up a larger creature. This is different from a hive mind in that the ...
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1answer
84 views

If a human were able to change its own celluar structure how would it evolve? [closed]

Say a human gained the technology to change its own cellular structure, what ways could said human go about "evolving/modifying" itself? How far can it modify itself?
5
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2answers
264 views

Can a disease be airborne but not be contagious by other means?

Building on Josh King's answer to this question concerning the feasibility of a disease which dies with its host, can a disease be contagious by airborne means while not being contagious by fluid ...
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3answers
180 views

Is a plague that is only contagious from a living host feasible?

How believable is a touch or fluid vectored bacteria which is so dependent on its host that the remains of a terminated victim become non-contageous within minutes of the host's death? I'm ...
7
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4answers
947 views

What evolutionary benefits does a hexapodal body plan have?

We all like hexapods, from the Centaur to the Griffin. A large problem with the realism of the hexapodal body plan is that there are not many reasons for a creature to have them and is still worth the ...
7
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7answers
694 views

How would a giant structure in the sky affect life below it?

I am making a world with a gigantic structure the surface size of a smaller continent. This structure is suspended about a hundred meters above ground, and before the construction the area below was ...
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1answer
102 views

Animal like Pando

Pando is a system of clones, each clone is connected and genetically identical to the others and they all share the same roots. Pando is the heaviest and oldest living organism, with a size of 430'...
22
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5answers
3k views

Could mankind have domesticated the zebra as a riding animal?

There are various arguments on the web stating that the domestication of zebras is impossible, because zebras are bad tempered and skittish, and/or animals elsewhere are even-tempered and friendly. ...
1
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1answer
271 views

How to think faster? [closed]

Human brain cells can pass chemical information to each other at a speed just slightly above 400km/h, which is quite fast. However, this has to be multiplied by every cell needed to make a single ...
3
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3answers
158 views

Utilize virus & bacteria to perform fast kills

Assume a supernatural character, who has control over billions of billions of virus and bacteria. It's not always an interesting concept, ss infections typically spread slow, and moreover, the nature ...
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3answers
3k views

How can I preseve a small sample of blood for centuries?

I have a race of carnivorous mammals (the same from this question) for whom blood plays an extremely important role in cultural rituals. For complex cultural reasons, a member of this race (call him ...
-1
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1answer
392 views

How did humans in different regions evolve so differently? [closed]

Google is about as helpful as a mouse trying to catch a piano, since it's listed websites that aren't very clear or informative. So: How did humans evolve to be so different from one another? Say, ...
10
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4answers
685 views

What benefits, if any, would animals have on an island given that they all have black fur or skin?

This actually occurred in a dream last night, but I'm interested in what could come out of this. I'm not experienced with writing stories and have only read some Worldbuilding posts, so excuse me if ...
4
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2answers
220 views

How would much stronger gravity affect tiny living things?

Forgive me if a similar question has been asked, I can't find it. How would tiny creatures, ants, plankton, bacteria, for example, be affected if the Earth had twice as much mass. What are the ...
6
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6answers
391 views

Ecosystem that never touches ground

Would it be possible for a planet to have an ecosystem where life lives without ever touching the ground? By this, I mean that the producers (whether by photosynthesis, chemosynthesis, or other ...
2
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2answers
96 views

How would earth get affected by having a different orbit? [closed]

If Earth had Jupiters orbit how would it affect Earth's conditions? Earth has taken 5 years to drift from Earths current orbit to Jupiters orbit. Earth is on the complete opposite side of the sun to ...
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6answers
3k views

Would life still be possible on Earth if its atmosphere suddenly became as dense as the Venusian?

Assume that the atmospheric concentration is still the same 78.09% nitrogen, 20.95% oxygen etc, except now just as dense as the Venusian atmosphere. Would humans be able to survive in this atmosphere?
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7answers
492 views

Could a humanoid race living in a desert evolve without eyesight, as a protective measure?

I've got a humanoid race living in a extremely bright and hot desert. Would there be a plausible or realistic reason for them to develop without eyesight, due to the harsh rays of their sun? Or, ...
6
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2answers
461 views

Would a humanoid creature with pointed legs/feet be able to stand, walk/run and maintain balance?

Say there is a humanoid creature. This humanoid creature is very tall, with elongated arms and legs. The creature has legs that end in, rather than feet, complete points (similar to a spike). Would ...
9
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2answers
430 views

What evolutional adaptations would animals develop in microgravity?

There was an orbital station; a huge torus, as known from sci-fi. It was a luxurious place for people from dusty planets to relax at, and spend hard-earned money in environments resembling Earth from ...
4
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1answer
152 views

Many but one, alone but together

Could a creature evolve to have multiple consciousness ? Let me add more details : -They all live in the same body -They communicate with each other silently -They cycle phases of work when ...
2
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1answer
155 views

Could a traditional phoenix be resurrected after being dead for centuries? [closed]

In my novel I want my character to discover a phoenix. However, in my low-fantasy setting, magic and everything magical is believed to be long dead or nonexistent. To retain the idea that magic is a ...
6
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2answers
317 views

Species and Race diversity and names

what are the rules I need to follow to name different races of a specie and different species that have one ancestor in common ? Additionally how do i know when a race becomes a species ? Is an ...
3
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7answers
590 views

What could render a person blind without any visible markings? [closed]

I am trying to create a character who is blind but she didn't always start out that way. What are some things that could lead to vision loss without any visible reason. Assuming this is a fantasy ...
9
votes
1answer
806 views

Ultraviolet bioluminescence

Bioluminescence is badass. It involves living beings emitting bright light in the visible spectrum. Would it be, though, possible that a lifeform emits UV (ultraviolet) light? Does it occur in ...
6
votes
3answers
262 views

Is it possible for plants such as trees or grasses to evolve to exploit bioluminescent bacteria?

Would it be possible for plants to evolve a co-dependency on a community of bioluminescent bacteria in order to survive in a low or zero light environment? Such as the plant gathering nutrients and ...
61
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15answers
12k views

Is Cancer Biologically Universal?

Cancer works by making cells split and reproduce at an accelerated rate, slowly and painfully killing the afflicted. Its true weapon lies in its ability to surpass the immunity system. As far as I ...
6
votes
2answers
698 views

Can non-Newtonian fluid properties be applied to armor?

Non-Newtonian fluids are fluids that exhibit the qualities of a solid under rapid pressure but function as a liquid under long duration pressures. Is it possible, that an animal skin or some sort ...
41
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8answers
12k views

Would armour made of spider silk work?

Would it be possible to use spider silk for armour, instead of metal? I am not worried about how to obtain the silk. I know that spiders are not domesticable and that they are too aggressive to each ...
1
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2answers
171 views

breathable Athmosphere

The idea I have is an Athmosphere with heavy gasses so the creatures that inhabit this planet have an easier time flying. The temperature is colder than Earth -119° as minimum , 12° average and ...
0
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3answers
230 views

Realistic Marvel indestructibility/immortality [closed]

Spoiler Alert At what levels can any of this be realistic? And how? In the real world : Can any of them develop (evolve) naturally as a species? How many calories would they need daily to ...
4
votes
1answer
201 views

What levels of atmospheric carbon dioxide can humans cope with on prehistoric Earth?

At what levels of carbon dioxide do humans have breathing problems (e.g. hyperventilation) or adverse medical effects? And what level would people need to wear breathing apparatus to survive? This is ...
8
votes
6answers
360 views

What qualities are needed for a blind archer to effectively hunt from an air mount?

I am trying to make an original character who is blind and hunts with bow and arrow from a flying mount.  (Obviously, no existing animal can fly while bearing the weight of a human, so let’s assume ...
9
votes
8answers
630 views

What genetic changes and physiological adaptations to humans would allow women to produce more children

In this world Humanity was wiped out, all that remains are several small groups of genetically altered human chimeras. These new "humans" have a genetic cast structure similar to that of hive insects ...
1
vote
1answer
350 views

Would it be possible to grow bamboo on the Earth's moon?

Having somewhat successfully raised bamboo plants myself, I know that they're hardy plants. However, our moon is a pretty different story. If we were to bring bamboo to the moon and maintain a small ...
6
votes
3answers
554 views

Sexual reproduction without biological sex

Can a creature evolve to reproduce by exchanging the genetic code of two individuals without having any biological sex? So anything with male, female, both or a third sex is excluded. If it is ...
4
votes
1answer
178 views

Plausibility and ramifications of a mammal with both rut cycles and induced ovulation?

A hypothetical mammal has developed an unusual reproductive cycle. The females normally ovulate upon experiencing orgasm, whereas the males only display sperm production and heightened sex drive ...
13
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6answers
4k views

Would the atmosphere of an alien planet with the following mixture of gases be breathable to humans?

35% O2 (oxygen) 61% Ar (argon) 1.07% CO2 (carbon dioxide) 0.93% As arsenic 2% Other trace elements On an exoplanet with a mass of 0.284 Earths and a surface gravity of .66 gs (6.44 m/s^2), would this ...
3
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2answers
400 views

The Feathered Serpent in Real Life

The definition of a dragon depends on who you're asking. We are so used to the fire-breathing, bat-winged, avaricious antagonists of Europe and the long, lank wise men of Asia that we don't often ...
9
votes
2answers
951 views

Dead bodies on a partially terraformed planet : Would they rot or dry?

The planet in question is Earth-like in size and composition and orbits a Sun-like star. Its atmosphere is less than 5% Oxygen and plants (lichens, some grass and river vegetation) have started ...
4
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3answers
203 views

How could a Kradjin change evolutionary if used through millennia as a mount?

I’m writing a story where Kradjin carnivorous flightless birds have been used as mounts by a nomadic steppe living people for millennia and I’m curious how this might have altered their morphology. ...
6
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3answers
1k views

Immortal/indestructible creature developed naturally

Apparently life on Earth has no meaning, the closest thing to a reason to exist is creating as much biodiversity as possible, through reproduction forced as the only achievement every creature can ...
7
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2answers
2k views

Effects of increased air pressure on humans

This is a pretty simple question, but initial research only seems to provide the opposite end of the spectrum. What I'm wondering is if there are any known side effects of living in an environment ...

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