A brief introduction to the worldview. If you don't want to read it, you can skip it directly. It won't affect your subsequent reading.
About 700 million light - years away from Earth, that is, about 6.6×10^12 billion kilometers away, right in the center of the Boötes Void, there is a secluded planetary system. The "sun" here is a red dwarf star. Although it is small, its lifespan far exceeds that of the Sun. It can burn quietly for 100 billion years. If there is life living around it, there is almost no need to worry about the sun exploding.
Coincidentally, this sun is very lucky. Among its many terrestrial planets, a pink planet has indeed given birth to life and evolved a unique female - dominant ecosystem.
That is, females are born noble and scarce, while males serve as guardians and servants.
So how did this unique ecosystem come into being and develop?
We all know that the inevitable cost of asexual reproduction is genetic monotony, which can lead to the entire species being wiped out and the population perishing in the face of a certain plague or a small environmental change. Therefore, most life forms in nature choose sexual reproduction to ensure the genetic diversity of the population.
At the same time, the screening of harmful and beneficial genes in asexual organisms is very inefficient, while sexual organisms can select more excellent partners through courtship behavior between the opposite sexes and combine with them, thus retaining beneficial genes and discarding harmful ones, and being more adaptable to the environment.
The differentiation of genders is the law of nature and natural selection. Asexual organisms cannot compete with sexual organisms because the latter are more complex, advanced, and efficient.
However, under normal circumstances, a balanced gender ratio is more conducive to gene screening. So how did this planet develop a female - dominant ecosystem?
It all started 500 million years ago when insects first landed on land. At that time, the gender ratio in the life system was balanced. The newly evolved herbivorous ancestral insects, with no natural enemies yet evolved, grew explosively and almost ate up all the plants. In response, plants evolved into carnivorous plants similar to pitcher plants.
Normally, there would be insect - eating animals evolving to suppress the growth of ancestral insects. However, the ancestral insects evolved too perfectly, and for tens of millions of years, no targeted natural enemies evolved. This led to the first mass extinction on the pink planet.
Large quantities of plants were repeatedly eaten up, and then large numbers of ancestral insects died. When the number of ancestral insects dropped below a certain threshold, the plants recovered. The recovered plants would then lead to the growth of ancestral insects, and the growing ancestral insects would eat up the plants again. This cycle repeated.
The life system repeated this boring cycle for tens of millions of years, with almost no visible changes in the future. But life always finds a way out. A mutated pitcher plant created a brand - new genome. After devouring an ancestral insect, its genes actually merged with those of the ancestral insect.
This was unprecedented. Animals and plants had broken through the reproductive isolation!
This pitcher plant could lay insect eggs and accept fertilization from ancestral insects, thus creating a new plant category different from seed plants - symbiotic plants. Symbiotic plants can breed animals and hybridize with animals, breaking through reproductive isolation.
The symbiotic animals bred by symbiotic plants will only have the motivation to survive when they are regulated by the growth hormones of symbiotic plants. In fact, symbiotic plants and the symbiotic animals they breed can be regarded as the same species, collectively referred to as symbiotic life.
Symbiotic life then stepped onto the stage of life evolution. At first, the gender ratio of the symbiotic animals bred by symbiotic plants was balanced, with a one - to - one ratio of males to females. However, symbiotic animals with a one - to - one male - to - female ratio could easily hybridize on their own and evolve into insects that did not need to be bred by symbiotic plants. These symbiotic life insects started another cycle of eating up plants. In this new cycle, it was not until the symbiotic life developed to the point where symbiotic plants bred far more male animals than female animals that the meaningless cycle ended and a life explosion occurred. Vertebrates, reptiles, and mammals based on symbiotic life emerged one after another, and life became more colorful.
After hundreds of millions of years of evolution, symbiotic life finally evolved intelligence. One million years ago, humans appeared. However, these humans are different from those on Earth. Due to the reproductive - isolation - breaking characteristics of symbiotic life, it might be more appropriate to call them beast - folk or orcs. They have all the genes of past life forms and randomly exhibit the traits of other past life forms.
In terms of appearance, they sometimes have cat ears or tails, or scales. The beast - folk are divided into males and females. Males are haploid, with only one set of sex chromosomes, X. Females are diploid, with two sets of X.
Males come in rather strange shapes, some in human form, and some completely in beast form, and they have some special abilities. For example, cat - people have night - vision ability, and dragon - people can breathe fire. The diverse trait expressions are helpful for gene screening. Females, on the other hand, for the stability of child - bearing, have more stable traits and generally do not have the characteristics of other animals, looking more like humans on Earth.
The beast - folk believe in the Tree of Life. All beast - folk are born from the Tree of Life, and females can be said to be the incarnation of the Tree of Life and also its seeds. They can control plants. When a female reaches a certain age, she will choose a comfortable place to grow a Tree of Life and create a new beast - folk tribe. Symbiotic plants are equivalent to the external uterus of females, and females are equivalent to the legs and brain of symbiotic plants.
Males are regulated by the odor hormones on females or the Tree of Life. They can only grow and develop when staying next to the Tree of Life. If they are away from females or the Tree of Life for a long time, they will lose their sanity and become brutal and blood - thirsty savages. This is why females are noble and scarce in this female - dominant ecosystem. Beast - shaped males will be the guardian beasts of females, and a few human - shaped males will become the husbands of females.
Females have two ways of getting pregnant. One is internal fertilization, usually for their husbands, and this results in only female offspring. The other is external fertilization. Females grow a Tree of Life, which blooms life - flowers. The guardian beasts fertilize the life - flowers, and this method only produces male offspring, mostly in beast form, with a few in human form.
Under the hormonal regulation generated by the true love of female beast-folk, male beast-folk will experience a phenomenon of super evolution. They may even evolve from a beast form to a human form.