Organisms are not allowed to reproduce across races, what causes reproductive isolation?

In fact, for us, the reason why organisms cannot reproduce across populationsIt is also because of the continuous evolution of organisms under natural conditions to form a unique population, which also leads to reproductive isolation, so for us, reproductive isolation is the foundation of the formation of biological populations, and in general, we should also think about the problem from the following aspects. <>

1. After a long period of evolution, organisms on the earth have formed different biological populations, and they have continuously multiplied and formed a unique biosphere.

In fact, for us, we will find that the organisms on the earth have evolved through a long period of evolution, and have formed special species, and they have continued to progress, differentiate and evolve to form unique populations, and it is precisely because multiple populations have jointly promoted the formation of a colorful biosphere, so because of this, reproductive isolation is inevitable. <>

2. The realization of biological populations is also produced through reproductive isolation, and the root of reproductive isolation is due to the change of species due to regional differences. In fact, it has to be said that the reason why biological populations can be formed is also because of long-term regional differentiation, and different organisms have formed different species in different special environments, and gradually evolved into different signs and external structures after a long period of adaptation, so it is precisely because of this that reproductive isolation has been produced and different species have been formed. <>

3. Reproductive isolation is inevitable, and it is constantly changing with the changes of the outside world, so the emergence of new species must arise from reproductive isolation. In fact, we will find that even after the same organism continues to reproduce, it will also carry out new population differentiation after the emergence of regional differences, so for us, under the change and constraints of natural conditions, it leads to different evolutions of species, and forms different evolutionary paths, and finally forms reproductive isolation and becomes a new species.

In fact, for us, there are many reasons for reproductive isolation, the most fundamental is due to regional differences, and to be natural, it is necessary to modify organisms, so it is precisely because of this that if organisms want to continue to reproduce, they must followBiological evolutionThe road undergoes continuous differentiation and evolution, so reproductive isolation is the inevitable result of the continuous reproduction of species.

It is caused by the great differences and differences in the reproductive genes of organisms, and reproductive isolation is a protective measure between different species to maintain the stability and balance of the ecosystem.

Changes in gene frequencies directly lead to reproductive isolation, which leads to the creation of new species. The carrier of the existence of living organisms is the earth, and the environment of the earth is constantly changing.

In biology, there is no reproductive isolation between subspecies, there is geographical isolation between them, such as humans, yellow and Caucasian belong to subspecies, they can communicate genes with each other, and their offspring can be fertile.

There is no reproductive isolation between subspeciesor imperfect reproductive isolationTarget.

It is only necessary to have at least one typical morphological feature that is different from the original species, and the new population is at least 75% of the original population.

As for the imperfect reproductive isolation......

There are 3 subspecies of owls in the United States, A is on the East Coast, B is in the middle, and C is on the West Coast, and the offspring of A and C are severely decayed and sterile, and there is reproductive isolation, but A and B can reproduce normally, the offspring are normal, B and C can also reproduce normally, and the offspring are normal, so A and C can still achieve gene exchange with the presence of B, which is called imperfect reproductive isolation.

There is no reproductive isolation.

A subspecies is a cluster of phenotypically similar populations of a species, inhabiting sub-geographic areas within the species' range, and taxonomically distinct from other populations of that species. A subspecies refers to a population of a certain organism distributed in different regions, and due to the influence of the living environment in the area, they have undergone certain changes in morphological structure or physiological function, and this population is called a subspecies of a certain organism.

There are no subspecies of humans. The racial division of human beings is a cultural concept, not a subspecies in the biological sense.

Because human beings are isolated from each other, so as to ensure the normality of the human world, human beings are the highest level of primates, compared to other creatures, they do not have the consciousness unique to human beings, which is why human beings are isolated and reproductive isolation of all living beings.

Because the way of reproduction between different substances is not the same, the genes are not the same, so there is some reproductive isolation.

It is an evolutionary mechanism and also to prevent offspring from being produced between members of different species, and the offspring are unable to be fertile.

Are classes reproductively isolated from all living things? What exactly does this phenomenon mean? Human beings are the highest creatures of nature, and Chinese scientists have clearly pointed out that human beings evolved from apes based on scientific research.

In the process of evolution, there are actually many types of humans, such as early Homo sapiens, cave man, Neanderthals, etc. According to the current view of our academic community, Neanderthals are the only ones who are not reproductively isolated from people today. All other organisms are reproductively isolated from humans.

Reproductive isolation is a natural system that exists among different populations in nature. It ensures that there are no offspring or sterile offspring between different populations. Similarly, there is reproductive isolation between people and other populations, but there is no reproductive isolation between people and subspecies.

For example, reproductive offspring can grow between Chinese and black Africans. This means that there is no reproductive isolation between the two.

The reproductive isolation of people from other microorganisms means that people and other microorganisms cannot produce offspring. It also ensures the integrity of the human genome. Imagine that if there were no reproductive isolation between people and other organisms, there would be no racial restrictions among the microorganisms of nature.

And different microbial breeding may also produce new varieties due to the diversification of genetic genes. But most of the chances are that the organism that causes the abnormal contains a serious disease, and the disease is incurable for life. This would be unfortunate for even the slightest population.

If there is no reproductive isolation between people and other organisms, it is very likely that the original genetic order of people will be disrupted by the genes of other organisms. In the long run, it is very likely that the genes of human beings will disappear, and then people may perish on such an earth. What a horrible thing this is!

Therefore, reproductive isolation is designed to prevent such tragedies. The reproductive isolation between humans and other organisms means that there are differences between people and other organisms, in fact, in order to preserve the genes of human beings from being destroyed. It can ensure that people live a normal life.

Humans are reproductively isolated from other animals on Earth today, unable to communicate genetically. The existence of reproductive isolation makes even cross-species gene exchange between the same genus carry a series of risks.

Yes, it is true that there is reproductive isolation; This means that the theory of evolution has a certain scientific basis, and the human genes are very solid.

Yes, of course. This allows us to dig deeper into the issue of genes, which is also to avoid the extinction of the species.

We all know that horses and donkeys can give birth to mules, while lions and tigers can give birth to ligers. However, due to the differences in the number of genes and chromosomes between different species, different species are unable to reproduce, or the offspring are infertile. This phenomenon is biologically known as reproductive isolation.

The so-called reproductive isolation is the inability to produce offspring or the infertility of the offspring produced by the union. Therefore, strictly speaking, it can be said that as long as there is reproductive isolation, it is a different species.

If it weren't reproductively isolated, it wouldn't be a different species.

For various reasons, the isolation mechanism that makes groups with close kinship not mate under natural conditions, and even if they can mate, they cannot produce offspring or cannot produce fertile offspring, which is called reproductive isolation. And as long as there is no reproductive isolation, it is the same species, so there must be reproductive isolation between different species.

There is not necessarily reproductive isolation between different populations, it may only be geographical isolation, but because the time is not too long, such as the South China tiger and the Siberian tiger, they still belong to the same species, and the concept of population is only all individuals of the same species that occupy a certain space for a certain period of time. But a species can have many populations, so not necessarily, after all, a species is distributed in different places and is also different populations

You just need to remember that as long as there is reproductive isolation, it must not be the same species, and even if it gives birth to offspring, it is also sterile, such as the birth of a donkey. And with only geographical isolation, not necessarily.

Insects and grasses, or simply animals and plants, this cannot be called reproductive isolation, because there is no need to consider, so there is no concept.

Reproductive isolation refers to the fact that, for a number of reasons, "groups of different species that are closely related" do not mate under natural conditions (interspecific hybridization, even if they produce offspring, the offspring will not be fertile or unable to inherit stable traits).

It can be seen that reproductive isolation refers to the non-mating relationship between species of the same family or genus. Not to mention animals and plants, there is no so-called reproductive isolation between ants (Hymenoptera) and termites (Isoptera). Because of different orders, the pedigree is different, and it is a distant relationship.

I hope it can help you, if you don't know, please ask! ^_