Stack Exchange Network

Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [genetics]

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

3
votes
6answers
450 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
175 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
400 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
61 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
95 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
476 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
168 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 ...
25
votes
13answers
4k views

Real DNA encryption (or at least making it hard to decode/change)

So I'm the owner of a startup which is going to make our lives easier with custom-DNA creatures! Our few first products are selling very well and nothing was wrong until last week's events. Another ...
1
vote
2answers
126 views

Could a species develop its civilization if it wasn't violent? [closed]

The race I'm designing originated in a small island in the middle of an ocean the size of Crete, which has no natural predators. That, combained with a random mutation that occured in this species ...
2
votes
2answers
464 views

Can genetic modifications become hereditary? [closed]

Could genetic modifications become hereditary over time? If so could they evolve over time similar to regular genes? For example making carbon fibre bones for whatever reason would they eventually ...
8
votes
4answers
192 views

How can isolated matrilineal societies avoid loss of genetic variation?

In this setting, the family unit is based around a clan system. An individual's wealth and status is related to the clan they are born in, and it's ancestry is based on matrilineal lines. Due to ...
0
votes
3answers
157 views

Could the genetic makeup of two parents theoretically combine just right to make a superhuman, or at least semi-superhuman child?

Basically I want my character to have only gotten their powers through the luck of two parents with the right genes mixing. Technically, given enough time and enough generations of breeding, couldn't ...
2
votes
1answer
492 views

Hereditary immortality: Plausible?

Background info I am writing a story and I have a young character named Lydia who is worried about dying young and having fertility problems. Her not so close family has a history of that. Dying so ...
0
votes
5answers
228 views

How do you motivate workers to conduct dangerous missions?

So, this is for a "space drama" that is set in the not too distant future. The world is running out of resources, but has developed an rudimentary interplanetary travel capability. Several planets ...
7
votes
1answer
240 views

How many generations to lock in androgynous human characteristics?

My story happens in fictional medieval age. There are the usual suspects of peasants, clergy, craftsman, merchants & aristocracy. There is also a specific class of hereditary servants. They work ...
1
vote
1answer
71 views

How do I measure the stages of futuristic genetic engineering development? [closed]

Please note this question was originally asked and deleted by the user Era. I've chosen to resurrect the question with slight modifications because I think it is deserving of and will foster ...
7
votes
3answers
134 views

2-Dimensional sexual polymorphism - What chromosome system would allow this kind of reproduction?

"Polymorphism" is the name for when members of the same species exhibit different physical forms. The differences between the male and female phenotype is an example of polymorphism in humans (and ...
1
vote
1answer
137 views

How would the genetics of a species with three genders work? [duplicate]

I've read some lines from wikipdeia and it didn't really help. So... Here I am. My alien species has three genders and all of them are active in the act of reproduction. In doing so, I would like to ...
-1
votes
1answer
102 views

Human Genome, does it hold “secret/lost/inactive” Code shared with animals VIA our Common Ancestors? [closed]

I seem to remember reading that in the human genome there's a lot of "inactive" code, codons that might have been useful millions upon millions of years ago but now have no effect on the human body as ...
4
votes
3answers
159 views

How to make changes to a human person's DNA actually be expressed in the individual's phenotype

A flaw very often pointed out in your run of the mill genetic terror story is the instant effect of genetic changes. What would it take for a specific change in the specimen to actually appear (near) ...
18
votes
7answers
5k views

Will a race survive eugenics?

I recently watched the classic film Gattaca, which is about a world in which humans are selected with desirable traits at birth. Ignore all the ethics of abortion and genocide (like those claimed for ...
-4
votes
1answer
98 views
2
votes
1answer
103 views

The Multi-Purpose Horse: Stage II: The Shiring [duplicate]

Last time, I asked if it's possible to breed a five-gaited horse as hardy and adaptable as a Yakutian horse. Turns out that it's not as straightforward as initially assumed. It seems that not all ...
7
votes
2answers
208 views

What would happen if people started breeding seals for companionship, like dogs? [closed]

I have edited the question, and it is no longer too broad. My one and only question is the one shown in bold below. If you agree that it is not too beoad in this state, a vote to reopen would be much ...
7
votes
2answers
558 views

The Multi-Purpose Horse: Stage I: Icelandic x Yakutian

I am in pursuit of, as the title says, a multi-purpose horse, a single breed that can do all the things that the others were only specialized for: travel, labor, companionship, war, speed, strength. ...
2
votes
3answers
372 views

Travelling in space for 6000 years, how many persons are needed? [closed]

So a spaceship is on its way to a new planet. The crew needs to survive during 6000 years on board. They will not get any help and they need to survive on their own. How many persons would need to be ...
5
votes
3answers
274 views

What Could Aliens Do To Devolve Humans With A Germ Line Virus?

The Objective Lots of questions at this site consider how humans could be enhanced with genetic engineering. But, if you are an alien, you may have the opposite priorities. These aliens are ...
10
votes
3answers
1k views

Taxonomy of genetically engineered species

The Context I have a group of genetically engineered people known as 'crows'. Their genome has been meddled with significantly enough that they are unable to successfully reproduce with humans, but ...
7
votes
3answers
160 views

What can be said about phenotype inheritance based on this family tree?

Take the following family tree, which is meant to show individuals exhibiting in their phenotype a particular genetic trait. White boxes (A, ...
4
votes
2answers
155 views

How do I create a gene simulator? [closed]

I want a machine that can read DNA and then project what the creature looks like. I have a computer that is as powerful as needed but I don't know where to start. What are there major challenges to ...
-5
votes
3answers
237 views

Future The Last Man on Earth [closed]

I watch the TV show The Last Man on Earth and currently the women are having kids to repopulate. They haven't covered how eventually they will have to inbreed a generation or 2 away. In the event ...
3
votes
5answers
336 views

What genetic modifications would be beneficial for post apocalyptic warriors?

During a nuclear total war between to superpowers, a military unit deserted and formed the gang which they called "Cobras". There is a gang of malcontents and misfit mauraders who collectively call ...
1
vote
3answers
534 views

What Would Be Needed To Produce Human Hermaphrodites?

What kind of mutations would be necessary to cause humans to start producing fertile hermaphrodites?
8
votes
4answers
410 views

Methods to Implant Serial Numbers in/on Clones

I am writing a science fiction story with mass produced clones. Since I have a number of clone I need to tell them apart. The ID system must be: Permanent over the lifetime of the clone (call it 150 ...
5
votes
1answer
215 views

In a species of simultaneous hermaphrodites, would there be any meaningful difference between siblings of the same parents in opposite roles?

Inspired by this question: Sexual reproduction without biological sex And, to a lesser extent, this question: Would a society of simultaneous hermaphrodites have gender roles? I'm not particularly ...
-1
votes
2answers
296 views

Is it possible to breed genetically perfect humans [closed]

Is it possible to breed humans to create a group with no mental or physical deformities. And get to the point where this group of humans is also biologically more resistant to mutations that might ...
5
votes
3answers
141 views

Perceiving color like a native

Assumptions One habitable world in each system (blue sun system and yellow sun system). The two worlds are fundamentally Earth-like. The native humanoid species on each world are genetically ...
7
votes
2answers
156 views

Could you breed a hominid to have an identifying crest?

This question is related to the world from my prior questions, in which several types of intelligent hominids evolved in isolation, until they were rediscovered, conquered, and bred into a biological ...
11
votes
11answers
2k views

Could your grandchild be genetically identical to you?

Plain and simple: could your offspring's offspring be genetically identical to you? What conditions would this be possible under, if any?
0
votes
2answers
203 views

A friend has an idea for a PA colony traveling to Proxima Centauri B but need help fleshing it out

So, my friend had an idea for a weird Post Apocalypse society traveling through space towards Proxima Centauri B, and she's trying to figure out where the population would be 50 and 100 years after ...
4
votes
1answer
180 views

Would it be viable to have a pre-wired brain rather than one that is soft-wired or hard-wired?

(Edited question to meet concerns) The Problem Can you create synthetic biology that can be installed temporarily in human DNA to give people skills at birth, or are there problems, risks and ...
16
votes
10answers
2k views

Why would life on a different planet use DNA?

Life on Earth pretty early on settled on deoxyribonucleic acid organized in chains of base pairs as the means to code for the construction of proteins which make up a lifeform. It also has the benefit ...
6
votes
3answers
2k views

How small can a population be with regard to genetic diversity?

I'm working on creating a species that favours small families for a number of reasons, and have no interest in 'breeding as much as possible'. As a consequence, their population size is small. But how ...
10
votes
13answers
979 views

How does a species with three “sexes”, where only two needed are at a time, determine the sex of its offspring?

I am trying to figure out the sex-determination of a very foreign form of reproduction. A species has three sexes X, Y, and Z. X produces X gametes, Y produces Y gametes, Z produces Z gametes. They ...
7
votes
2answers
486 views

Genetic Compatibility Amongst Differing “Fantasy” Races

Okay, it's a staple amongst certain fantasy settings where you have different races of creatures and beings co-habiting, which leads to certain off-shoots of different races (the half-elf and half-orc ...
5
votes
6answers
245 views

How to Extend Female Fertility Period without Altering Current Pubescent Timing?

I would like to use CRISPr Cas9 technology to extend the life expectancy of my fictional civilizations. From what I understand, CRISPr could extend life by lengthening telomeres and improve quality of ...
13
votes
14answers
4k views

Can an Alien Breed With Earth Animals?

This is my first post here, but here we go: I have been creating an alien world for a while, and the sentient species on it is very canine-like. They have a canine body, legs, and head, and the only ...
0
votes
1answer
63 views

Enhance our body by fusing It with better genes

Is it possible for a human body to became better by fusing it with new and better genes if other species? I played Mass Effect: Andromeda and this idea just doesn't come out of my head. I mean - ...
32
votes
21answers
8k views

Sure-fire way to identify an heir in a world without genetic testing

My question is about unusual hereditary traits in humans. I'm new here and this is my first question - apologies in advance if I've accidentally messed this up or covered existing ground. I'm writing ...