Questions tagged [genetics]

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

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Would humans crossbreeding with animal people cause more birth defects? [closed]

I am working on a world inspired by witcher where humans and animal like race live together. would for example, human crossbreeding with water dwelling humanoid cause something like mermaid syndrome? ...
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-2 votes
1 answer
113 views

Impact on genetic diversity with 6 person mating groups

Context I know enough about genetics to know I need to ask others. I'm writing an alien humanoid species that revers the number 6 as part of their culture and religion. Their marriage equivalent forms ...
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-1 votes
6 answers
206 views

What kind of reproduction methods would allow for an only male animal species to exist?

I was reading that there are certain species of starfish which fission made them in some locations to have a scarcity of female starfish and in other locations there are species which only male ...
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5 votes
1 answer
62 views

What changes to a humans physical form would occur if society lived inside the Earth?

(Mandatory I am new here, hello, nice to meet some fellow world builders, sorry for any mistakes, yikkity yak and all that) In my "world", it has been 500 years since the majority of human ...
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1 vote
0 answers
88 views

A genetic disease that makes humans have much more brown fat than the average human being

I wonder if the disease I invented is realistic or a total fiction. In my story The Transcendence of Adolescence, there is a 17 years old homosexual (or lesbian if you want) transgender woman named ...
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4 votes
1 answer
385 views

A genetic disease that makes humans unable to produce adrenaline

I wonder if the disease I invented is realistic or a total fiction. In a white drama/lighthearted tragedy (the opposite of black comedy/dark humour) web-series for a teen audience in mind I want to ...
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13 votes
10 answers
2k views

Variable Intelligence Among Dragons

In the land of Dracoriri, there are dragons. There weren't always dragons, once humans were the dominant species, but then magic-an unexplained phenomenon-invaded earth alongside creatures from ...
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-8 votes
1 answer
221 views

Would many parents use In Vitro Gametogenesis and Designer Baby technology to choose to have girls with Complete Androgen insensitivity Syndrome? [closed]

I have been reading about Complete Androgen Insensitivity Syndrome and from what I understood these women have features like being more beautiful and more attractive than the average, lack of periods, ...
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6 votes
4 answers
814 views

How does the human body reacts to cells older than its own? [closed]

The question is: If i could replace my arm with the arm of someone older than me, would the fact that the cells in the transplanted arm are older cause any specific reaction? Please handwave all ...
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5 votes
2 answers
81 views

What would a heterozygote advantage against the mutant coronavirus responsible for COVID-19 look like?

Some heterozygote advantages in humans are: People with sickle-cell trait are resistant to malaria, but people with sickle-cell disease tend to die young. Depending of the source we believe, people ...
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-1 votes
1 answer
145 views

Harmonizing Lamarckism with Genetics [closed]

Many Science-Fiction worlds, whether or not by design, have their aliens arise by what seems to be a form of Lamarckism. While this is all well and good, these same worlds also make use of a lot of ...
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2 votes
1 answer
150 views

Would many parents use Designer Baby technology to make their children have Asperger Syndrome?

I have Asperger Syndrome and I was thinking if in a future which parents can use Genetic Engineering to choose the characteristics of their offspring many of them would choose their children to have ...
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3 votes
2 answers
116 views

Why would a species from the Homo genus have overwhelmingly B negative blood type?

In my story (go to see What evolutionary pressures would lead to Ogres?), there is a massive species from the Homo genus called ogre. They mostly have B negative blood type (I do not mean Rhesus null, ...
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-3 votes
2 answers
209 views

Shortest pregnancy length possible using artificial womb technology [closed]

Let's say that genetic engineering can make a baby be born far less than 8 - 9 months and since the artificial womb is a device it would not have the metabolism limitations that a real womb have so ...
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1 vote
2 answers
224 views

Genetic Plausibility of All-Male Half Giants and All-Female Witches

So, this problem is kind of a two-in-one; arguably two different issues but very closely related, so I'm posting them as one question. I'm designing a lineup of fantasy races for a roleplaying setting,...
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0 votes
3 answers
135 views

What would this character potentially be charged with in this situation? [closed]

In my sci fi short story I'm working on, a company called Generation sometime in the future, develops a viral based treatment for a new kind of cancer that has arisen in young children. Around fifteen ...
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5 votes
2 answers
228 views

What are some specific body parts that would irreversibly fail over time in a cancer-immune, biologically immortal person?

Let's say that you have a person who's, if certainly not immortal in the general sense, biologically immortal, as enumerated in this question - not only do their telomeres never shorten, they're also-...
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  • 9,606
6 votes
3 answers
263 views

Near-biological immortality and cancer immunity via repurposing telomeres

TL;DR: I have solved aging and cancer with the power of handwaving and genetic science. All rejoice. Yes, there is a question at the end of this all, but you have to read it for it to make sense. In ...
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  • 9,606
-4 votes
1 answer
124 views

Would it be possible to genetically engineer wings onto humans? [closed]

This is entirely hypothetical, but there is human gene editing equipment. It is hypothetical because the wings would not work, unless they were ultra-light and the wingspan was 60 feet.
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4 votes
2 answers
116 views

What would a heterozygote advantage against rabies look like?

Some heterozygote advantages in humans are: People with sickle-cell trait are resistant to malaria, but people with sickle-cell disease tend to die young. Depending of the source we believe, people ...
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1 vote
4 answers
234 views

How would a human/floral humanoid offspring look?

I’m trying to figure out what the appearance of a human and a floral humanoid offspring would look like. The floral humanoids have humanlike bodies with petal hair and “unnatural” skin color (which ...
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5 votes
1 answer
169 views

How much of a genetic bottleneck would one man siring children in multiple generations be?

After reading Ryan North's How to Invent Everything, I thought it might be fun to try to do my own Connecticut Yankee story for NaNoWriMo, but going back an early Stone Age population. I figure on ...
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2 votes
7 answers
129 views

How to ensure magic-sensitive population remain low? [duplicate]

In my world, China earns its beginning to three major clans: the Huang, the Yan, and the Chi You. Huang and Yan are normal homo sapiens, but Chi You is a clan of sentient magical reptiles like dragons ...
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  • 1,740
2 votes
1 answer
126 views

Genetic disease that makes thermoregulation voluntary

I wonder if the disease I invented is realistic or a total fiction. There is a real life genetic disease called congenital central hypoventilation syndrome (or Ondine's curse, if you want). People ...
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5 votes
3 answers
476 views

A genetic disorder that makes people unable to feel itch

I know that congenital insensitivity to pain exists and is autosomal recessive. There is a village in Sweden where 40 cases of this rare genetic disease were reported. I am writing a story with a ...
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5 votes
2 answers
99 views

Heterozygote advantage against influenza/flu

Some heterozygote advantages in humans are: People with sickle-cell trait are resistant to malaria, but people with sickle-cell disease tend to die young. Depending of the source we believe, people ...
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2 votes
2 answers
142 views

Would digitigrade legs be superior in low gravity for a bipedal organism?

all, I was reading another post on this forum about humans with digitigrade legs, mostly noting that they were relatively inefficient due to constant exertion to remain standing. On a planet with ...
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  • 1,342
6 votes
1 answer
202 views

How can an animal get "upgrades" at different stages of its life?

I want an animal that gets harder to kill as it grows older, biologically immortal. Every time the animal passes different stages of its potentially endless life, it can choose to "upgrade" ...
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  • 237
3 votes
8 answers
299 views

How would a small society of wizard geneticists spread magic powers through a magicless earth best?

A society of wizards has a magical gene they want to spread on an otherwise magicless earth. The magic gene is limited in total potency to any effects that you could produce with a million dollars. ...
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  • 23.5k
4 votes
4 answers
157 views

Could a genetically modified plant become a house?

I was checking out art made by Hyrotrioskjan on Deviantart and found his Nea project. One art piece features large genetically modified plants that are able to essentially house a community. These ...
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2 votes
1 answer
165 views

What would it take to have a 100% redhead population?

Redheaded-ness is a recessive trait. Obviously a society could just kill every baby that comes out with a different hair color, but is there any passive way for a human ethnic group to be 100% ginger?
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13 votes
15 answers
6k views

How can the wealthy prevent the illegal propagation of their genetic code?

The human genome has been completely mastered and understood by the end of this century, which has led to a service industry revolving around genetic codes. Gene editing to prevent diseases are now ...
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1 vote
2 answers
146 views

Re Zero ; kill all and start over - what genes are associated with non violence

Anyone with a perfectionism mania would understand the urge to delete and destroy everything for the smallest mistake, the most insignificant impurities are disgusting and craze inducing from the ...
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0 votes
0 answers
29 views

Are humanoids capable of breathing in water and on land feasible? [duplicate]

Is it possible to genetically engineer a creature that can breath in air and water? If so, what changes would have to be made assuming the creature was originally a human?
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2 votes
2 answers
212 views

Making egg laying humans [duplicate]

What are the minimal changes to human biology that a biological engineer can make to create humans that successfully reproduce via egg-laying? Assume that he wants to preserve as much of the ...
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10 votes
2 answers
179 views

Can any monosaccharide be used as a XNA backbone?

I'm not a chemist—I'm an artist and I occasionally write. But I'm starting to get more and more interested in xeno/speculative biology. When it comes to these things I'm pretty much just looking at ...
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  • 135
8 votes
8 answers
2k views

How long would it take an isolated population to develop into its own ethnicity?

Okay, so I had this idea that there is a group of refugees (a majority of them civilian families) taking cover from an invading force, vanishing into a mountainous region that serves as a natural ...
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  • 571
4 votes
6 answers
286 views

What are some ways I can ensure that only a small amount of people actively try to pursue divination in a pre-modern society?

I'm trying to make a story where the amount of people that are able to see the future range from 1-0.1% (i.e. 1 in 100 to 1 in 1000). The problem I'm having is that I'm trying to have my cake and eat ...
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  • 362
-2 votes
1 answer
122 views

What kind of genetic problems would arise after three, five and ten generations of inbreeding? [duplicate]

In this case I'm assuming that the family has been inbreeding to a level of 2 or closer for a certain amount of generations. Given this what would be the likely issues that would arise after: Two ...
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  • 362
28 votes
7 answers
8k views

How would "Amazon" (a female only subspecies) genetics work?

The traditional Amazon tribe in mythology is a society of only women that reproduces by capturing outside men. Suppose that the Amazons were an actual sub-population/subspecies of humans that, as the ...
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1 vote
1 answer
131 views

How would a Low Fantasy Iron Age setting be effected if Inbreeding and Divination were directly connected? [closed]

I'm trying to make a world with a very low fantasy setting in it. The world itself is currently at levels or similar to that of the Classical Civilizations during the later parts of the Iron Age i.e. ...
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3 votes
3 answers
601 views

How long would it take for inbreeding issues to arise for a family that practiced inbreeding?

The magic in my setting arises from inbreeding. However to gain the powers a person must be in-bred. How long would it take before such problems arise from inbreeding if the people continued this ...
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1 vote
2 answers
168 views

Superpowers from a Blood Transfusion

Okay, in a lot of pop culture, blood transfusions can give you superpowers. In Metroid, Samus Aran was given Chozo blood to enhance her strength so that she can survive Zebes' gravity. Zebes having a ...
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  • 2,210
-2 votes
3 answers
201 views

How could civilization deal with a prion pandemic? [closed]

Prions are misfolded proteins that cause neurodegenerative diseases. They are smaller than viruses and they are the smallest known infectous pathogen. Somehow they could reproduce on their own and the ...
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4 votes
3 answers
472 views

How can the human body be optimized, yet still be mostly human?

I've been curious for a while now about how much room we have left for evolution as a species, or at the very least, as a people, due to one of my projects involving genetically-engineered superhuman ...
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1 vote
1 answer
140 views

A genetic disorder that makes people look like an elephant and a whale

I want to know if the genetic syndrome I invented is logical or just a total fiction. There are seven symptoms: Gigantism; Truncal obesity; Alopecia universalis (the complete absence of hair all over ...
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2 votes
1 answer
169 views

Genetic disorder that would be the opposite of achondroplasia

Achondroplasia is a form of dwarfism that is characterized by short limbs and normal-sized abdomen, torso, neck, and head. Could there be a form of gigantism that is characterized by long limbs and ...
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0 votes
1 answer
177 views

Human-Alien Hybrid Babies (18+) [closed]

Okay, I have stories with interspecies sex, complete with viable offspring. What kind of gene editing would be needed for that to even work, and how would the resulting child's genes be expressed? And ...
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  • 2,210
10 votes
7 answers
815 views

How different can an alien be from us if it is possible for us to have sex and procreate?

Aliens have arrived to Earth from the depths of space, and thankfully they are peaceful and only want to learn about us and interact with us. Despite some initial trepidation, first contact goes well ...
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  • 5,913
9 votes
4 answers
1k views

Could cats sustain themselves in caves?

An odd question, yes, but a question I am asking anyway. I have a group of feral cats that lives in a cave system. They've lived down here for generations, and survival of the fittest weeded out the ...
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