Questions tagged [genetics]

For questions about a way to pass on biological information from one generation to the next.

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2
votes
5answers
240 views

Species where every individual looks the same

I was thinking for ideas for new species for the planet I'm currently worldbuilding, and it occur to me if there could be a species (humanoid) where everyone looked exactly the same, and if this could ...
3
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3answers
210 views

Decimating humanity though no daughters gene - when and where to introduce it?

At one point in the past, a man had a mutation on his Y chromosome. Anyone with the mutation would only produce Y sperm, and only have sons. My plan is to have this have a big impact that threatens to ...
31
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18answers
11k views

How does an all-female medieval country maintain itself?

Here's a question that came up while I was tinkering with a setting I'm working on. How would a small city-state, with a population in the tens of thousands, where all children were girls, sustain ...
6
votes
3answers
113 views

What are my “viral” humans harvesting from from my uninfected humans?

The following scenario takes place on Earth, sometime in the next few decades. An unethical biotech company has developed a deadly bioweapon that uses humans as a vector, almost like a suicide bomber ...
2
votes
4answers
134 views

Can a living human's DNA be modified for use as a living library?

I know that DNA can be used to encode information, using ACGT as a quaternary instead of binary encoding. Could a functional genetically-modified human walk around with a lot of information stored ...
10
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6answers
2k views

To what extent is it feasible for this race to be majority female?

In my world there is a race of humans who are disproportionately female. They are closely derived from and very similar to real-world humans, but are unable to interbreed with the other races as they ...
4
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3answers
257 views

Is there a reason that females passing on more than 1/2 of their genetics to the child would be unlikely to evolve?

On the earth today most animals use a two sex mating system where male and female provide the same amount of genetics to the resulting offspring, despite the fact that in many cases the female ...
6
votes
6answers
230 views

Crazy Alien Genetics

Think of a species (ONLY ONE SPECIES) the individuals all live in the same environment, share the same sentience level BUT are divided into "A", "B" and "C" races which have different number of limbs,...
2
votes
1answer
120 views

Venusian Adaptations

Recently I've been imagining living on a terraformed Venus in a distant future. I've a pretty good idea of how this can be done, having gone through many articles on how to terraform venus, so my ...
2
votes
3answers
189 views

Would you carry the exact same DNA if you were concieved at a different time?

In this world, time travel is possible, but the only thing that can be sent back in time are thoughts. From the perspective of your past self, you suddenly one moment realize that you have "memories ...
6
votes
5answers
377 views

Which cells to pick to get a pure sample of DNA without precise equipment?

Normally when conducting DNA testing, I presume techniques are utilized to ensure you're just testing one individual's DNA from a sample, even if it is possible that sample was contaminated one way or ...
5
votes
2answers
253 views

What happens when a person with some edited genetics (like say, eagle eyes) reproduces with a person with regular genetics?

If person A has had the genes dictating their sight/ the internal structure of their eyes, replaced by say, eagle eyes or cat eyes. What happens when they reproduce with person B who has regular ...
3
votes
1answer
128 views

How do I determine whether hybridization would be possible between various creatures? [closed]

I ask because the world I'm building has eight distinct races of humans on one planet, as well as various non-human animals that don't currently exist in the real world. I'd like for some forms of ...
8
votes
4answers
346 views

What is more plausible, viruses in a host brain or a viral colony becoming conscious?

In my story I have a strain of virus capable of stealing parts of or changing its hosts DNA, so it could copy the abilities in nature for its next host of choice by taking the genes which control the ...
2
votes
1answer
128 views

Could there possibly be any alternative biomolecules that could store genetic information like DNA and RNA? [closed]

I study quite a lot of chemistry, biology, and other branches of those fields, alongside some forms of astronomy. As part of a large-scale project I have been working on for a few years and continue ...
8
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4answers
439 views

Alien life interbreeding with Earth life [duplicate]

I had an idea for a planet which, millions of years ago, was accidentally contaminated with various animals, plants and microbes from Earth, and - via the planet's native aliens' bizarre reproductive ...
4
votes
1answer
221 views

How would their children look?

My story takes place in a medieval/fantasy setting. The main part plays out on a locked-off island with a fairly uniform population I'd call Asian to keep this question to the point (look Asian and ...
3
votes
5answers
288 views

Would having more than two sexes decrease the number of individuals required to have a sustainable population from a genetic perspective?

On a world made up of many small islands, each island cannot support a very large population. Although sometimes individuals from one island make it across the ocean to another, this is usually a ...
6
votes
6answers
491 views

Is plausible to have subspecies with & without separate sexes?

I'm creating humanoid specie with two subspecies Hairy races - roughly based on humans, chiss, mirialans, with standard males & females sexes Tentacle races- roughly based on asari, twilek, ...
5
votes
7answers
523 views

How can I avoid the problems of incest without expanding the gene pool?

The demigods of this world are avatars of the one true God known as Dea and built in the image of humanity. They are independent and have their own opinions from each other, but are connected by a ...
5
votes
2answers
513 views

Can Apes (Including Humans) Be Naturally Patterned Like Felids?

For visual reference: Apes are visual species who rely more on their eyesight than any of the other senses. As a result, they see the world in three shades of color, whereas other mammals see in one ...
3
votes
3answers
203 views

Why would a “chosen one” come from outside a religion? [closed]

The crawling chaos, Nyalathothep, has formed a cult on the mortal plane devoted to his cause which worships him as a god. This cult has been operating in secret for thousands of years, sowing ...
5
votes
6answers
474 views

Would multiple fantasy races eventually become homogenous?

In a setting with multiple sapient fantasy races (ie, elves, orcs, humans, dwarves), assuming these races could interbreed and this activity became common, would they eventually reach a point of ...
2
votes
1answer
237 views

Highest level of 1930's Technology possible [closed]

Backstory I have a character who goes back in time to plant an idea in the minds of government scientists during the 1930's. The idea is to analyze a DNA sample and recreate it for future use in the ...
7
votes
3answers
211 views

Genetic exchange between animal and plant, Elves love trees

This question has its origins in the word "dendraphile" used in a YouTube comment. It was used in an insult used by dwarves towards elves. My chain of thought then was that the dwarves would use ...
10
votes
6answers
1k views

How would 10 generations of living underground change the human body?

In my country, we are split down the center by an intensely large mountain range. Us desert people live on the eastern half of the country, while on the other side of the mountain range the forest ...
6
votes
2answers
220 views

Can you replicate a being's DNA just from observing it?

In the movie Captain Marvel, the main antagonists (at least for half the movie), the shape-shifting Skrulls, can change their appearance to perfectly match any humanoid creature, down to DNA. ...
3
votes
4answers
181 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 ...
4
votes
1answer
164 views

Can a possible humanoid species capable of changing their sex in a crisis be the dominant species of an entire planet like us?

I had an idea of a concept a while ago. If a planet that for some reason or another had only one giant continent like Pangea, but bigger, for more distinct habitats and giant lakes assuring ...
9
votes
5answers
568 views

Would a virus be able to change eye and hair colour?

The basic idea is that a small group of people, that were infected by the virus but managed to survive, has their hair colour changed to white and their eye colour changed to green. Said traits would ...
53
votes
12answers
7k views

How can an organ that provides biological immortality be unable to regenerate?

After Cain killed his brother Abel, he was cursed by God to wander the earth forever. On his travels, he met a sympathetic woman named Lilith. They discovered that they had a mutual beef with their ...
1
vote
6answers
206 views

How can a terrorist cult genetically engineer human bombs?

A nihilistic organization founded by a preacher, Solf J. Kimblee, has reasoned that human beings have fallen short of God's true purpose. Since the betrayal by Adam and Eve, all people are born with ...
11
votes
3answers
2k views

How can an evil spirit take control of a human body during REM sleep?

I have a friend who is a really nice guy. The problem is that he was born as a half demon. While he looks completely normal, he possesses a spirit inside him called "Amon". This being forces him to ...
5
votes
14answers
598 views

How can the remains of a god's corpse be kept off the black market and out of the hands of mortals?

A demigod is a mortal being infused with divine energy. This essence comes from a divine spark in their soul that activates due to some external traumatic event. This spark is very rare, and most ...
4
votes
6answers
245 views

How can a terrorist group link a biological plague to a specific genetic signature?

A domestic terrorist organization has come to light due to recent terror attacks that they claim responsibility for. This group has developed a biological weaponized plague that attacks the nervous ...
0
votes
1answer
345 views

Would it be possible to genetically engineer Dragons? [duplicate]

DRAGONS. ARE THEY POSSIBLE? By current genetic engineering..? no. But let's say somehow we got shot 200 years into the future?! Would you think it would be possible scientifically? Defining "...
2
votes
2answers
115 views

Could DNA Survive in Outer Space?

In my story the inhabitants of Earth are near extinction. They want to make a capsule of a bunch of human DNA and blast it toward the Andromeda galaxy. They take 1 oz of every blood type still living ...
9
votes
4answers
2k views

Could the Bunker Dwellers become noticeably different from Wastelanders?

So, in my world, there are a group of people, mostly unknown to the rest of the world, who took shelter from the apocalypse 90 years ago in great underground bunkers. Compared to the rest of the ...
5
votes
5answers
788 views

Why would a species require multiple inseminations in order to reproduce?

The Eldar are a psychic species with a similar body design to humanity within a galaxy-wide empire. They are far more advanced than other races, technologically and philosophically. Eldar have a ...
7
votes
10answers
394 views

Logical reason why would the bunker population use Wastelander DNA samples?

It’s been a little over 190 years since WWIII, AD 2157. Most of the surviving human population live in small farming settlements, tribal villages, or, if lucky, United City States. But, there exists a ...
9
votes
8answers
429 views

How could a bloodline ability manifest in one sex but not the other?

A kekai genkai is a bloodline ability that is passed down genetically within clans. They give users access to specific powers unique to that family. These abilities take a number of forms: going bones ...
5
votes
2answers
152 views

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 ...
3
votes
6answers
577 views

Can one individual be used to repopulate an entire species?

An evil scientist has engineered a plague that would kill anyone with an xy chromosome pair. This plague has systemicatically spread throughout the planet, killing all males within the population. All ...
25
votes
7answers
5k views

Is intraspecies genetic incompatibility possible?

I'm creating a humanoid species, roughly based on humans. The difference is that not every opposite sex couple of fertile age could produce offspring. The premise of my story is based of some men ...
8
votes
1answer
187 views

How can professional leagues implement gene enchancement into sports while keeping a balance among athletes?

The year is 2050, and genetic enchancement is now commonplace in society. People can currently opt to improve their bodies through the form of gene packages. These are geared towards increasing ...
-1
votes
7answers
454 views

How can I explain why Screamers weren’t created in Hiroshima and Nagasaki’s aftermath's?

So, in my post-nuclear US, a form of mutant, called “Screamers” are somewhat prevalent. They are stronger and stockier than humans, and are hairless and greenish-beige pigmented. As it turns out, ...
2
votes
2answers
85 views

Do we know which traits reside in which chromosome? [closed]

I'm intrigued with the possibility described in Is it plausible to make human gametes from different parent chromosomes?. Assuming that humanity developed technology that allows us to make sperm and ...
5
votes
2answers
281 views

How do I tune the incidence of gene expression in my fictitious population?

Related questions How can I make a net beneficial genetic trait occur only in a small fraction of the population, sustained? What percentage of the population has the “magic gene”? Premise When ...
10
votes
3answers
516 views

Is it plausible to make human gametes from different parent chromosomes?

I'm creating a near future world where laboratories could create human gametes (sperm & ova) using chromosomes from different people. So theoretically we could take 1st chromosome from a 1st ...
1
vote
4answers
763 views

Biology of hermaphrodite species

How from a evolutionary standpoint hermaphrodite species can exist and have a good genetic diversity, with no self-impregnation? But, this race visually looks more like females, they do have breasts ...