The evolution of Zerg

The founding cell has long since died, but his genes have been passed down.

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

This is what Zhang Fan is worried about. What if he is allowed to mutate and an uncontrollable situation occurs?

So now Zhang Fan is doing it himself, changing the genetic structure without affecting control.

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

Species diversity is the core of biological diversity, and species are the basic units of biological classification.

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

They live in a certain space in the form of a population, 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 isolation between individuals of different species. They cannot mate or even if they cross, they will not produce the same offspring. Descendants.

The first thing to do is to have a genetic mutation and return to the original point.

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

This is easily explained by the fact that there are more organisms, even if they are producers, they are also consumers, and they are also decomposers.

Cyanobacteria are producers, but the energy substances currently produced can only be used by themselves.

Cells and paramecium belong to consumers, one is responsible for the evolution of ecological diversity, and the other is responsible for transportation.

The final decomposers are bacteria, and Zhang Fan found that he couldn't live without these lovely bacteria.

Speaking of bacteria, Zhang Fan thought of viruses. Viruses can be fatal to cells, but so far he has not discovered viruses or created viruses. Viruses are not currently under consideration.

After the analysis, Zhang Fan fell into trouble again, and couldn't get around the issue of genetic mutation.

Try it first. If you can't control it, destroy it. Zhang Fan thought, but he still needed to make some preparations.

Phagocytic cells are ordinary cells that protect the body like soldiers and can destroy foreign invaders.

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

Ordinary cells can be changed by producing specific enzymes.

The experiment continued, and soon phagocytes were produced.

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

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

The lake now has nothing to do with what it once was.

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

The blue-green algae reproduced very quickly, and the entire lake was covered. Some blue-green algae successfully landed and turned into moss.

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

The movement speed has become even faster, and from the perspective of Paramecium, it is somewhat inappropriate, so it is better to call it a flagellate.

Flagellates are protozoa that use flagella as motile organelles, have no chromoplasts, are of many types, widely distributed, and have diverse lifestyles.

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

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

This is not Zhang Fan's fault, this is the choice of survival of the fittest due to natural selection. 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 through muscle contractions and have a special snout to absorb 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 it moves very fast. It reproduces asexually. This worm is as important as the first cell division.

Although Zhang Fan has been asleep 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 look on the ground.

The moss on the ground was covered with death on one side and Zhang Fan could be regarded as a person who had experienced countless deaths.

He found that an important reason why moss cannot survive on the ground is the lack of water.

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.

There are currently millions of worms, and ordinary people would be frightened to see one.

But these are Zhang Fan's bodies. The more they are, the happier he will be.

Next we need to do an irrigation project.

Hundreds of thousands of worms were pulled out, and they were allowed to swim under the blue-green algae. Their stomachs were filled with water, and then they climbed up the moss and sprayed water.

This series of actions resulted in the death of tens of thousands of worms, all of which were killed by the sun.

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

The oxygen content in the air is not high yet, and the oxygen emissions from just one lake are so small that even if it takes hundreds of millions of years, it will not be able to fill a planet.

Zhang Fan's Third Army is still taking action. This time he wants to make spores. These spores can float in the wind and are an important part of colonial expansion.

There is no sex. This method of reproduction is too slow. I will make it all asexual.

Spores are produced one after another on the blue algae, like a handful of black sesame seeds sprinkled on the flatbread.

A breeze blew by, and the spores carrying a large amount of oxygen in the body were blown out.

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

In the air, he discovered that he was on a continent, with the ocean dozens of kilometers to the east.

Tsk, everyone evolved in the sea, but I evolved in the lake. Is this a mistake? Zhang Fan curled his lips and said.

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

The lake where Zhang Fan was originally was not small. It was already the largest known lake at present.

It was a low-lying land, irrigated by rainwater and not formed by the convergence of rivers.