Posts tagged genetics
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 li...
This questions came to me after some discussion on my previous one about a civilization living under Antarctica. I somehow have the feeling this is a dumb question - sorry if it is -, however I ca...
A common feature in fantasy are half-human creatures such as centaurs, satyrs and merpeople. As much as the worldbuilding community wants these to be real, the evolution and anatomy don't match. ...
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...
Thousands of years ago, human domesticated wolfs and from this domestication came dogs, one of the most varied species on earth. This occurred through simple genetic manipulation and forced evoluti...
Assuming an average, fully developed adult man, what sort of changes could be made to his genome that would have a noticeable effect on his mind or body? To the best of our current scientific knowl...
I was thinking of a scenario in which people decide to use breeding to try to make two species more genetically related to each other. The people take genetic samples of each individual from their...
In Ribbontails Series Aman5 there are creatures called Kuutamian animals. These animals are sapient and can have any form. The creator uses the excuse that they have three DNA strands, but how real...
If a pair of twins developed when their mother's egg split in half and they were fertilized by different sperm, could one of them develop situs inversus? The child with the condition would be male,...
I read in this question that the minimum viable population without causing large problems in genetic diversity is about 50. If we have a larger population (say a hundred) and genetic diversity beco...
I'm trying to make a world that human sex ratio is 2:8 (male:female). Most of the females are homosexual, and male is not necessary for reproduction. I thought it was easy at first, just say that t...
70,000 years ago, Homo sapiens sapiens suffered a genetic bottleneck that reduced the population of likely 100,000 to 3,000. Over seven billion people of several distinctive races are descended fr...
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...
I am interested of a fictional future world where people can walk into a bar, order a drink with the flavors they want, and as that drink flows through their system, their DNA is modified. An exam...
If there are several races with very distinct appearances (e.g. Nordic-pale vs. Arabic-tan skin, red vs. black hair, etc.), how much space / natural barriers do I need between their homelands to ju...
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