Posts tagged reproduction
Yay my second alien sex question, I hope I am not arrested. Context Okay now to nitty gritty, So I got an intelligent species of Ostrich/flamingo looking creatures(this refers only to the shape, ...
Bonobos tend to solve disagreements through sex instead of violence, what might have caused this to evolve, or something similar to evolve in a sapient race of humanoids?
I'm looking for a way to render a large percentage (30 to 50%) of Earth's human population infertile in about 10 years. Medicine and tech levels are approximately where they are now, maybe slightl...
I'm trying to layout a scientifically correct evolution path for the octopus to develop intelligence on the post-human Earth. I'd like to know if it's possible for an octopus mom to choose, or use ...
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 particularl...
What are the fastest and slowest gestation rates possible in a humanoid species and/or a human sub-species? What does the gestation rate say about the species and vice versa?
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. The...
In this hypothetical world, evolution occurs as it should. (Not to run afoul of any genetic diversity requirements of evolution; some simple viruses have aided in the genetic shifting process). But...
You all know the story of a women waking up to find herself heavily pregnant with some demon child or somesuch, or the pregnancy spanning a couple of days/weeks rather than the standard 9 months. C...
I'd like to have a community of humans live indefinitely in space habitats (think space stations supporting mining operations in the asteroid belt). The technology would be "day after tomorrow"-le...
Premise: Assume that one man has a genetic mutation such that his gametes (sperm) never have an X-chromosome. Unlike most men (who have a roughly 50/50 chance to sire a male or a female child) t...
I have a sapient (alien) species that behaves more or less similarly to humans, and that includes their romantic interactions. However, although they court/date each other much like we do, there is...
Horizontal gene transfer via retroviruses that change an organism's germ line DNA exist, even in humans, and account for a minority but not insignificant portion of the genomes of many, if not most...
There are many organisms that sometimes reproduce asexually and sometimes reproduce sexually (even snakes and sharks!). There are also a fair number of organism that reproduce sexually but have a ...
Imagine that the average number of children born per birth without any artificial intervention was three (i.e. triplets were the norm) and that 98% of pregnancies gave rise to 2 to 4 children, with...
Some species which reproduce sexually will replace one sex with (or add) hermaphrodites. The coexistence of males and hermaphrodites is androdioecious, females and hermaphrodites gynodioecious, and...
I am designing an alien species of organism (not necessarily intelligent, in fact, probably not). My current settings are these: The female is very large (bigger than cattle, smaller than elephant...
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-inc...
This hypothetical marsupial species raises young in a manner loosely similar to seahorses. Only the males have pouches: after gestation the female deposits the fetus into his pouch to compete devel...
Horny and Hungry "You're like a father to me." "Yeah, I wish you were dead, too." "Thanks, Dad!" I have a world in my stories in which the inhabitants evolved from a race that practices s...
I have in mind this alien species that can reproduce with humans. The result will always be of the same species as the alien; the human is used only to vary the genetics so the newborn won't be a c...
A hypothetical organism alternates between plant and animal stages over its life cycle. The organism exhibits equally extreme sexual dimorphism. The generations are diplobiontic a la some species ...
Every species I'm aware of on earth has two sexes (with the possible exception of species which change their sexes to allow self fertilization). Is it possible for a species to evolve which could ...
Current technological level. (in the setting there is an awful tech stagnation, so waiting for better DNA engineering technology is considered as waste of time) Possibility to use all contemporary ...
Simulation of artificial panspermia, in inter-galactic travel, as a model for the study of reproductive isolation. Case 1: If we send a mass of proto cells(kept alive by some mechanism like cr...
It's easy enough to figure out how a species might evolve a third biological gender in general (e.g. some sort of asexual drones/workers, ala insects). But what I want to build is a system where t...
I'm developing a world in the near future where a start-up company develops an artificial womb. Now well-off people could grow their children from their eggs & sperm. My story is about couples ...
Under what circumstances would a species develop an adaptation to employ surrogate wombs of their own species or others? The species implants its zygotes/eggs in the uterus/brood pouch of a surrog...
Certain aphids and mites reproduce by telescoping generations, but do so in different ways (parthenogenesis and intercourse in utero, respectively), Hypothetically these methods could be combined....
Given any kind of living organism (plant, animal, silicate, gaseous, energy, etc.,) what logical reasons (natural, environmental, evolutionary selection, nurtured, artificial) could result in more ...
Isogamy: "sexual reproduction by the fusion of similar gametes." Not to be confused with Isogyny, "marriage between people of similar status or age." All such species on Earth lack tissue-level or...
Many questions on Worldbuilding have posited different reproductive strategies that often result in the virtual enslavement of females (when there are females involved). On Earth, normal human biol...
The (female) human body is pushing the anatomic extremes to support, later bear and nurse a baby while maintaining upright posture and bipedal walk. I cannot see a way to realistically make pregnan...
I was watching a television program recently about Naked Mole Rats and how they are they are one of the only known Eusocial mammals. They have a single queen who produces offspring as well as warri...
In my world human(oid)s are not born anymore, they are grown in pods which mirror the conditions of a natural womb. Children are educated before birth and are "born" as fully mature adults with a ...
Suppose in one part of the universe unexplored by science, I imagine there exist a species that rely on quantum teleportation to transmit information about their genetic codes across to the other s...
Pretty much what it says on the tin: It's the beginning of 2016. Due to a fast-spreading virus, humans have lost the ability to reproduce themselves. The virus makes current artifical fertiliza...
We all know that genetic diversity in our species (homo sapiens) is maintained by sexual reproduction. Man and woman provide each half of genetic information randomly selected from their own to the...
Some species that reproduce sexually, don't actually have sex as such. Instead the female might lay soft scaled eggs, which the male then fertilizes extrenally. I want to know what a society of an...
- ← Previous
- 1
- 2
- Next →
