Posts tagged sex
So I thought about how my dragon-like species would get it's wings between the arms and legs and I figured that this would be the evolutionary path for such a creature: Hexapodal ancestor -> Q...
No, this is not not about courtship displays or dominance figths. (even thought I know that that is also part of mating) This is more of "What their genitalia would look like" and how they would "...
Can a creature evolve to reproduce by exchanging the genetic code of two individuals without having any biological sex? So anything with male, female, both or a third sex is excluded. If it i...
I want to make my unicorns use the horn as their male genital. Is it biologically possible to put the genital on their head? I know there are many strange genital locations for animals, for example...
just as the title, my question is can it possible for a creature that can reproduce with any/all creature despite it was different species/family? (not the alien xenomorph or parasite one/way but r...
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 prov...
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, t...
Many believe that sex before a competition can have a negative impact on performance in combat, speed and strength sports in males. Athletes from strength and speed sports showed decreased perf...
On another planet there is a group of organisms that have colorful display patterns allowing them to attract mates. Eventually a branch of this type of organism evolves the intelligence of early h...
In a post-industrial collapse scenario, what would be the most effective methods for contraception? Situation is a small scale civilisation with limited access to industrial materials and tooling b...
In the human species, one male partner is enough for the sperm to fertilize the egg. The average cargo is just one child, half of its DNA from the mother and the other half from the father. But t...
So I have an alien biosphere in which trisexual reproduction predominates. As far as we can tell, trisexual reproduction does not offer an advantage when it comes to shuffling genes. The biological...
Consider a group of humans at a bronze-age to early iron-age technological level colonizing a new earthlike planet. There is just one difference - there exists on the planet something which change...
A hypothetical species reproduces by females impregnating males a la seahorses. However, their reproductive system appears woefully ill-suited to this task. Their genitalia are outwardly similar to...
This species of humanoids has a peculiar way of reproducing. Instead of the usual physical intercourse between a male and a female, followed by the sperm cell merging with the egg cell to generat...
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?
Given eggs and sperm, and the means to preserve them for centuries, could an artificially intelligent machine possibly produce its own "children", so to speak? Assume it has everything it and its ...
We're all aware of modern-day fertility treatments, like artificial insemination and hormones, but are there less advanced ways to trigger ovulation and/or otherwise boost fertility? What methods m...
There is a species that is quite sentient. Its members know about the world, they have hopes and dreams and great aspirations of what they might do with their lives. They are intelligent, creative,...
Mating rituals are various behaviours, serving as a precursor to copulation in almost all animal species. In general these serve to aid the females of the species to pick out a mate. They can be in...
I've seen a lot of questions on here about the possibility of more than two sexes but I've found nothing on the possibility of only a single sex. The closest thing I've found is isogamy, is there a...
Although (as far as I've seen, I haven't done in-depth research) the original/older version(s) of the succubus legend just have them as demons who seduce you, more modern interpretations seem to ma...
For example, a half-cat half-human hybrid might have a zone partway down their tail, or a human might have one in an unusual place e.g. their scalp, shoulders, whatever. I've seen this used in fic...
In this world Humanity was wiped out, all that remains are several small groups of genetically altered human chimeras. These new "humans" have a genetic cast structure similar to that of hive insec...
A group of 35 superhumans from the future get trapped on the alternative Earth still in the Dark Ages. Banding together they take control of a small country and establish themselves up as kings and...
Imagine an Earth-like planet with a moon that is closer to the planet than ours with a lunar cycle of 18-19 days. I am trying to imagine how this different cycle would affect human beings and anima...
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...
I'm going to borrow many ideas from birds to keep my dragon airborne, porous bones and feathers to keep it light while spewing balls of flame to create warm air currents at high altitudes. The prob...
A race of complete female humanoids have DNA that is similar to humans but distinct enough to be consider a different species (think donkeys and horses). This species can mate with humans and othe...
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 ...
Imagine a species that evolved almost identical to our own, except for one difference. A child's sex is not decided by the presence of a Y chromosome, and all embryos have the potential to evolve ...
Implants and/or augmentations in human brain are widely shown in fiction: improving and/or enhancing certain functions of the brain by artificial means can have nearly endless possibilities. All o...
Related to this question on lack of human dimorphism, but hopefully the length of time my question has sat in the sandbox unremarked means that I have successfully been more specific. I'm writing ...
Imagine a species almost identical to humans, with one exception. All sperm contained both X and Y chromosome, and every child has the potential to develop as either sex. However, the mother has ...
A hypothetical mammal has developed an unusual reproductive cycle. The females normally ovulate upon experiencing orgasm, whereas the males only display sperm production and heightened sex drive du...
So, if you haven't looked at my previous question: Would a sentient species be able to thrive when mating means the death of the male partner? Please do, as the information in it directly pertains...
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...
I came up with an alien species that has the following reproductive life: They hatch out of eggs, tended by their mothers, and by the end of the first year (about two Earth years long) they are ...
After reading the question on inbreeding (Could fictional species benefit from limited inbreeding?), I started to wonder if there could be any reasons why an species (intelligent or otherwise) woul...
Modern human mothers can now choose the sex of their children, without surgery or procedures. For every pregnancy, the sex of the fetus must be chosen. In a culture that has a strong preference for...
