Debate on the pros and cons of biological variation moderator .

1. Variation is movement, an inevitable form of material existence.

Everything is changing. Some are structural changes (chemical reactions), some are changes in the form of existence (e.g., snow, fog, steam, ice, and water are the same substance), some are changes in the state of motion (e.g., electrons, atoms), and some are changes in position (e.g., the movement of stars). Where there is change, there is difference, and this is the broad understanding of variation.

2. Variation is absolute, everything is changing.

When it comes down to biology, no two living beings in the world are exactly the same; Every individual is changing from time to time, yesterday's me is definitely not equal to today's me, and the childhood state of me is definitely different from the old one.

3. Without mutation, there would be no biological world today.

We know that all living things originated from primitive life, and if there is no mutation, how can we distinguish you and me in today's world? How can there be a dazzling and colorful biological world?

4. Variation is the harmony between organisms and the environment.

The environment is constantly changing, and for major environmental changes, organisms can only adapt to the environment through mutation.

This is a debate question given by a brainless brother! There are no advantages and disadvantages to mutation, it mainly depends on whether the environment is stable! How are you going to argue about this?

For example, people, if it weren't for the changes in the African environment, the ancestors who suddenly became strong in the lower limbs and suitable for running would have no use, and they couldn't compete with the orangutans. But if you have forest wood, isn't this an advantage, so if you say that the forest is still there, this is an advantage or a disadvantage.

1.Biological variation is the driving force of evolution.

Modern evolutionary theory holds that evolution comes from genetic variation. Genetic variation provides the material and impetus for biological evolution. Today's biodiversity is entirely due to favourable variation accumulated over a long period of geological time.

2.Variation is often harmful.

The probability of mutation is very low, generally 10 -5 to 10 -12, and the favorable mutation only accounts for about 10 -6, so it can be said that the mutation that occurs is almost always harmful.

3.Now biotechnology has allowed people to control the direction of mutation.

For example, genetic engineering can be directed to introduce the required genes into the receptor. Bioengineering can be considered to increase the incidence of mutations and select favorable variants from them to serve people.

4.The disadvantages of biotechnology, the possible dangerous consequences are unknown.

Genetic engineering is still very controversial because its safety is not guaranteed.

5.Variation is the source of genetic diversity, and it causes differences between individuals within the same species, increasing the adaptability of the species and preventing it from being unable to adapt when external conditions change.

6.Variation is the basis for artificial selection of crops and animals. Penicillium penicillin production (up to 85,000 u ml) is now thousands of times higher than the original strain (about 20 u ml), which is achieved by the accumulation of favorable variation over a long period of time.

to the mutant creatures themselves.

He's an anomaly, and his survival is difficult.

Associates unsociable people and plays them.

Relationship with human beings.

The risk to humans from mutated organisms is: I don't know.

Because you don't know, you may make a mistake.

The damage can become irreversible without realizing it.

White pollution and pesticides can be used as examples.

That's why people are worried about GMOs.