Questions tagged [genetics]

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

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0
votes
3answers
291 views

Do we need to match and couple humans manually in future to maintain gene pool of human beings?

(I'm talking binary:Male and female) This is post apocalyptic scenario. I'm writing a short story and storyline​ is as follows: In a distant future: After the world war there are only a few thousand ...
17
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2answers
2k views

Humanoid Race with Surpressed Myostatin Gene - Appearance?

I'm thinking about using this as a sort of meta explanation for how Orcs (and possibly other things as well) are different than humans (in muscularity), but I'm not entirely sure what the result of ...
-1
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1answer
73 views

Should people be able to know what disease(s) they may have in the future based on their genetics? [closed]

I recently read a short article in the magazine new scientist saying that 'People in the US will soon be able to buy a genetic test that tells them whether they are at risk for late-onset Alzheimer's ...
7
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5answers
2k views

Visual changes in appearance after 6000 years away from earth

The story is as follows, a group of people (around 2000 from all around the world) leaves earth and lives on a different (earth like) planet for ca 6000 (earth) years. The planet is about 0.8 times ...
-1
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2answers
91 views

How would humans adapt to extreme climates [closed]

I have a situation when urbanites without any useful survival skills (bankers, marketers, curators, sociologists, etc) are mysteriously brought on a Earth like planet. They have to revert to hunting ...
20
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11answers
5k views

How could cats evolve toxic claws?

This cat looks like a normal Maine Coon to the unsuspecting victim. Except for one little detail: Red claws that inject a neurotoxin into the victim onpon scratching it. What would be the most ...
36
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14answers
10k views

How can hornets be engineered to kill a human with a single sting?

Asian Giant Hornets are particularly vicious and deliver a dose of neurotoxin to its victims. Generally an average of 59 stings are sufficient to kill a healthy non-allergic man Given a suitable ...
18
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24answers
4k views

How to limit the proportion of a Force sensitive population?

I'm making a world where small part of population are like Star Wars Force sensitives. They have high status in my world, as the sensitivity gives them certain advantages over ordinary people. A ...
4
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4answers
621 views

Can a species without uniform brain function time survive?

The magical species Zartika living on planet NB-8723D has organisms whose brains function at different speeds. All have almost the same physical body, but there lies some difference in their brains. ...
5
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5answers
415 views

How quickly would a genetic trait originally found in only 1 village spread across Earth?

The main trait of my story originates from a village in what's now the Belgian city of Tongeren, around 1000 BC in our timeline. Anyone born there after that trait arrived will have the trait, as will ...
6
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2answers
169 views

What selection pressures would favor isogametous reproduction requiring more than two parents?

A hypothetical organism is tetraploid and isogametous. To reproduce, four haploid gametes must meet and fuse into a tetraploid zygote. Any four individuals are sexually compatible, barring self-...
5
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3answers
384 views

What types of genetic characteristics would help animals survive a decades long nuclear winter?

I'm picturing a world say a 100 years after a devastating nuclear war with a decades long nuclear winter where DNA damage due to war related radiation as well as subsequent ozone depletion have ...
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6answers
514 views

Magical Talent: Genes vs. Enviroment

I've built a magical world. In this world, mages crop up one of two ways. 1) Genetically passed down. 2) Through exposure of magic, for example, growing up in a magical forest. I would also like ...
6
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5answers
2k views

What animal would men ride, if such animal was the same size as a horse [closed]

I'm currently trying to build a world where there is no animal that is like a horse, for example mule, or donkey, or horse. What animal could be ridden by humans if the animals were the same size as ...
-4
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2answers
230 views

If Our Horses Came From the OTHER Subspecies

It has become common knowledge among mammalologists that the origins of our most iconic rides, the horse, stemmed from the tarpan, a breed of wild horse that became extinct as recently as 1909 CE. ...
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6answers
451 views

Caste system by natural selection

Suppose there were a human society where rules of natural selection apply, but in a faster way, genetics change fast enough to be noticeable after a few generations (a static society with normal ...
1
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1answer
125 views

Humanity Without STIs [closed]

In the history of disease, ranking high among the list of most deadly are the rogues gallery of sexually transmitted infections--syphilis, genital herpes, chlamydia, gonorrhea, HIV and especially AIDS....
4
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1answer
352 views

The Red Skin Gene

In one of my more recent questions, one Xandar The Zenon commented that a mutation that creates the gene for red or orange pigmentation on the human skin is more likely than green, blue or purple. ...
9
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4answers
516 views

Little Green EARTH Men?

This question is based on the articles saying that the Mongoloid body plan was all due to an individual mutation from 35,000 years ago. In science fiction, humanoid aliens that aren't of the human ...
5
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1answer
88 views

What mechanism would degenerate gametes of select allosome?

I am looking for a mechanism that would cause ovum containing a specific allosome to degenerate before they could form a zygote. More detailed background: I am trying to design a unique method of ...
2
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3answers
193 views

A fully diploid species where males are only conceived parthenogenically?

What sort of sex-determination system would be required for males of a species to only result from parthenogenesis, whereas females only result from fertilization? I am not aware of a system exactly ...
6
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4answers
186 views

Implementing genetic-level transformation - mechanics

To My Valued Fellows, As we are all aware, our people have made tremendous progress both evolutionarily and technologically. Thanks to us, our species is protected from the ravages of cancer and we ...
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4answers
781 views

Greatest possible genetic difference between a male and female of the same species?

Nature does some pretty interesting things with gender: This is a female trilobite beetle. Scientists have observed females extensively, yet for decades, scientists could not identify the male ...
6
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2answers
370 views

How do you make a somatic mutation spread across all cells?

Toxic Spiders and Experiments Gone Wrong: Let's Talk About Comic Book Mutations Numerous superheroes get their powers after something mutates their cells. Perhaps it's a gamma ray, and results in ...
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4answers
279 views

So we've removed human discomfort. What happens?

Introducing MDR Splicing™ (Minor Discomfort Removal) Evolution has prepared us for the worst. We are equipped to tell if we're in danger and deal with it - nature has perfectly tailored us to ...
3
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2answers
408 views

Can we use GM technology to make humans regenerate?

The axolotl is a critically endangered amphibian with the ability to regenerate limbs, organs, and even parts of its brain. In an age where genetic modification is being used more frequently than ...
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1answer
337 views

Mountaineers With Big Hearts and Even Bigger Lungs

No matter which mammal you are talking about, be it a rodent or a bat or a cat or an elephant or a whale, all have the same lung size--7% of the entire body volume. In this alternate scenario, there ...
5
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2answers
186 views

Fine-tuning human genetic-level transformation

Suppose humans discovered a beautiful new world they wanted to inhabit, far from the political machinations and military affairs of the alien-populated universe. They established a few colonies on the ...
4
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1answer
147 views

Neandertal Civilization [closed]

Since its initial discovery in Germany's Neander Valley in 1848, Homo neandertalensis, the Neandertal, had undergone quite a dubious reputation. From sensationalist beginnings as big, hairy apes, ...
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4answers
332 views

Three sexes and biodiversity

Biodiversity is a result of semi-randomly combining the genes of two parents, which allows for mutations that can provide benefits. In order to have a sufficiently diverse population to persist, you ...
3
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2answers
465 views

Highest possible percentage of genetic diversity within a species?

Human genetic diversity between any two randomly selected individuals is estimated at below 0.5%. The most genetically diverse eukaryote known is C. brenneri(roundworms): 14.1% difference between two ...
7
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4answers
297 views

Is it plausible that there could be an alien species that has the capacity to mate with and share genetic material with many other alien species?

Kind of a "universal donor" or "universal recipient"? Aliens that can take on the qualities of several kinds of species and recombine them to make a kind of "super" being?
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1answer
207 views

Why did nature choose only two types of gender? [closed]

If nature has one type of gender, then after sexual reproduction only copies of the same living thing will produce with very or no variations in the new generation. So nature does not have a single ...
2
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2answers
109 views

How could species determine sex genetically using only autosomes? [closed]

Chromosomes, when paired, occur as both autosomes and allosomes. A pair of autosomes are identical in form, size and behavior. This is not necessarily the case for allosomes. Whether the allosomes in ...
3
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5answers
724 views

How could offspring only ever display the phenotype of their parent and never ancestor?

So a species has three phenotypes. If any two of the phenotypes produce offspring, it will display the phenotype of either of its parents. There is no possibly of displaying the third phenotype even ...
0
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2answers
482 views

Social implication of human hermaphroditism and parthenogenesis [closed]

Suppose in a world with technical development similar to ours (with nothing else changed), a genetically modified virus infected some of the people, making their children capable of parthenogenesis. ...
13
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4answers
3k views

Who owns genes? [closed]

I'm building a world where humans reproduce by machine, not by sex. Two or more individuals submit their DNA together to a breeding company. This company has pods that take multiple people's DNA, ...
4
votes
1answer
250 views

What's the fastest a genetically or technologically enhanced human could regenerate?

After watching this brilliant video by Shoddycast about Stimpaks in the Fallout universe: https://m.youtube.com/watch?v=CLY-FMxsb2U I started to wonder. Just how many of science fiction's most ...
9
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3answers
749 views

How to make different social classes look quite different?

I have a country, inspired by Edo era where for 2000 years the people lived in a hierarchical society arranged in below classes: 1 Aristocracy - Ruling class, negligible part of population 2 Warrior ...
32
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16answers
7k views

Is there a precedent for inventing a new technology many years before anyone else?

History shows that most inventors of groundbreaking new technologies, for example, the light bulb or the telephone were not actually the first to invent this technology and that there were actually ...
4
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5answers
622 views

How could humans re-populate a new planet without conventional procreation

This question is a spin-off of this question In my world humanity is faced with extinction and must devise a way to escape their barren planet. So say they take a space ship to the new planet and ...
16
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14answers
7k views

Could you populate a hospitable planet with only a vial of DNA?

In my world, the characters have to travel to a new planet and start all over again. Say they make the journey in a space ship transporting a bunch of human DNA samples. If this ship crashed on the ...
3
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3answers
340 views

What would be genetic and social result of artificial selection of people who would survive? [closed]

There is a standard, generic incoming doom. The general population is already roughly aware how nasty the situation is. (with both people overreacting and underestimating the problem) There is an ...
7
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3answers
590 views

Planetary Colonisation; how to retain ethno-racial appearances over millennia?

I was reading this question last night about people of colour in fantasy stories. I've read so many fantasy stories where any mention of colour is associated with the negative/animalistic/barbaric ...
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7answers
1k views

Stealing genetic code

I'm designing a creature that has found a new way to evolve directly during its life time. This method is different from having to bear incredible environmental stress or being a victim to violent ...
2
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1answer
170 views

How might an organism that is made from neutron superfluid store genetic information?

I was thinking of a set of life forms that originates from neutron superfluid inside a neutron star. So these life forms are not made of atoms but are made entirely of neutrons. How might this life ...
0
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1answer
129 views

The Mystery of Human Diversity [closed]

It had traditionally been assumed that the Caucasian, or White, race developed fair skin, flaxen hair and bright eyes as adaptations against the low-light areas of Pleistocene Europe. However, recent ...
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0answers
112 views

Delaying the Bottleneck Crisis [closed]

There was evidence that as much as 75,000 years ago, the human population experienced a sudden drop in genetic population, a "bottleneck" catastrophe. Was the supereruption of the volcano Toba to ...
44
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12answers
14k views

Could humanity survive if all except a few males died in a plague?

Tomorrow, a sudden airborne plague comes around that kills nearly all human males - women are unaffected. The UN and different nations try their hardest but fail to find a cure. There are riots and ...
3
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1answer
232 views

Society structure/ gender roles where biological sex consists of dominant and recessive alleles [closed]

Similar to this question with some very key differences. In this human civilisation sex 1 (s1, represented by 'X') is a dominant allele and sex 2 (s2, represented by 'x') is recessive. There are ...