Zerg evolution road

Chapter 4 Mosses and Worms
And that founding cell has long since died, but his genetics have been passed down.

Another type of genetic diversity is gene mutation. There are two main types of mutations in genetic material, namely, changes in the number and structure of chromosomes and changes in nucleotides within gene loci.

This is what Zhang Fan is worried about. What if he is allowed to make a sudden change and an uncontrollable situation occurs?
So now Zhang Fan is doing it himself, changing the genetic structure without affecting the control.

Under the current circumstances, Zhang Fan can only change through the surrounding environment, and change what he encounters.

Species diversity is the core of biodiversity, and species is the basic unit of biological classification.

Species need to meet several conditions: have relatively stable and consistent morphological characteristics in order to distinguish it from other species.

Live in a certain space in the form of populations, occupy a certain geographical distribution area, and survive and reproduce in this area.

Each species has a specific genetic gene pool. Different individuals of the same species can pair with each other and reproduce offspring. There is reproductive/reproductive isolation between individuals of different species. offspring.

The first thing to do this must be a genetic mutation, and return to the original point.

The last one is ecological diversity. An ecosystem is a natural complex composed of various organisms and their surrounding environment.All species are part of an ecosystem.In an ecosystem, not only do species depend on each other and restrict each other, but also organisms interact with various environmental factors around them.

This is easy to explain, that is, when the biomass is large, even if the producer is also a consumer, it is still a decomposer.

Spirulina belongs to the producer, but the energy material produced at present can only be used by itself.

The cells and the paramecium belong to the consumers, one responsible for the evolution of ecological diversity and one responsible for transportation.

The final decomposers are bacteria, and Zhang Fan found himself inseparable from these lovely bacteria.

Speaking of bacteria, Zhang Fan thought of viruses again. Viruses can cause fatal damage to cells, but so far he has not found any viruses, nor has he produced any viruses. Viruses are not currently under consideration.

After the analysis, Zhang Fan fell into distress again, and he couldn't get around the problem of gene mutation.

"Let's try it first, and if we can't control it, we can kill it." Zhang Fan thought, but still needs to do some preparatory work.

Phagocytes, which are ordinary cells that act like soldiers and protectors from foreign invaders.

It envelops foreign invaders and then uses special enzymes to break down proteins.

Ordinary cells can be altered simply by producing specific enzymes.

The experiment is still going on, and phagocytes are produced in a short time.

After giving the order, Zhang Fan fell into a deep sleep again.

The sun and the moon reversed, the stars moved, and Zhang Fan woke up again.

The lake is no longer what it used to be.

The first thing to note is that the volcano has ceased activity and everything is calm.

The reproduction of blue-green algae is very fast, and the entire lake has been covered, and some blue-green algae have successfully landed and become moss.

The creatures below the surface of the lake don't look so exaggerated. The paramecium is still working, but it also has some mutations.

The speed of movement has become even faster, and it is somewhat inappropriate from the perspective of paramecium. It is better to be called flagellate.

Flagellates are protozoa with flagella as motile organelles, without chromatophores, with various types, wide distribution and various lifestyles.

Their appearance greatly speeds up the movement of cells, and some tenacious flagellates can obtain food through cyanobacteria.

Phagocytes have become even larger, almost ten times the size of single cells, but these cells are extremely rare and are on the verge of extinction.

This is not Zhang Fan's fault, this is the choice of natural selection for the survival of the fittest. When there are no enemies, phagocytes really don't have much effect.

What caught Zhang Fan's attention the most were worms, real worms.

Worms are multicellular invertebrates. Worms move in a creeping shape by contracting the muscles of their bodies. They have a special snout for absorbing food.

This important discovery made Zhang Fan very excited and couldn't wait to try the feeling of worms.

The length is less than 0.1 mm, but the movement speed is very fast, and it belongs to asexual reproduction. The importance of this worm is no less than the first cell division.

Although Zhang Fan has been in a deep sleep for a long time and his genes have undergone a large number of mutations, he can still control these creatures, which is a good thing for Zhang Fan.

"I have to go to the surface and see."

The moss on the ground was covered with death while dying. Zhang Fan could be regarded as a person who has experienced countless deaths.

He found that the lack of water was an important reason why moss could not survive on the ground.

Water is an important source of life, and it can be regarded as God's favor for Zhang Fan, allowing him to find an area rich in water resources.

At present, the number of worms is huge, and if ordinary people see them, they will definitely stand on their heads in shock.

But these are all Zhang Fan's bodies, the more there are, the happier he is.

An irrigation project is to be done next.

Pull out hundreds of thousands of worms, let them swim to the bottom of the cyanobacteria, fill their stomachs with water, then climb up the moss and spray water.

This series of actions killed tens of thousands of worms, all of which were sunburned to death.

But these sun-dead worms are not useless, at least they provide nutrients for the moss.

The oxygen content in the air is not high, and the oxygen discharge of a lake is too small, even after hundreds of millions of years, it will not be able to fill a planet.

Zhang Fan's third army is still on the move. This time he wants to make spores. This kind of spores that can be blown by the wind is an important part of the expansion of the colony.

There is no sex, this way of reproduction, the efficiency is too slow, all asexual for me.

The spores are produced one by one on the blue algae, like a handful of black sesame seeds sprinkled on the flatbread.

A gust of wind blows through, and the spores carrying a large amount of oxygen in the body are blown out.

All the spores are under Zhang Fan's control, as long as there is a suitable place, they will break out immediately.

In the air, he found that he was on a continent, and tens of kilometers to the east was the ocean.

"Tsk, everyone's evolution is in the sea, but mine is in the lake. Is this a mistake?" Zhang Fan pouted.

Zhang Fan must go to the ocean, but he will not let go of the inland lakes either.

Originally, the lake where Zhang Fan was located was not small, but it was already the largest lake known so far.

There is a low-lying land, which is irrigated by rainwater, not by the confluence of rivers.

(End of this chapter)