Try to distinguish between heritability and variability. The difference between genetic variation an

Hereditary: also known as inheritance, refers to the properties of abstract and larger objects, including static properties and dynamic operations, which naturally become the properties of its subclasses, that is, the transfer of properties between classes.

Microbiology: the traits of the parent organism are expressed in the offspring, and the progeny passes on a set of genetic information that achieves the same trait as the parent organism.

Variability: Due to the influence of test conditions and test errors, the measured values are different, and this property of the measured values is called variability.

Heredity and variation are the most basic attributes of living things, and heredity ensures the existence and continuation of species; Variation, on the other hand, drives the evolution and development of species. The two complement each other and are interdependent, there is variation in heredity, there is heredity in variation, heredity is relative, variation is absolute, and some mutated forms or traits will be inherited in a relatively stable form, but not all variations are hereditary.

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Variations due to changes in genetic material are inherited; Variations caused by changes in environmental conditions are generally only present in the present and cannot be inherited. That is, variation can be divided into two broad categories: inherited variation and non-inherited variation.

It is important to emphasize here that the division of these two types of variation is relative. Because under certain environmental conditions, through long-term directional influence and selection, the accumulation of quantitative changes can be transformed into qualitative changes, and non-hereditary variations may be formed into genetic variations.

Heritable variation is variation caused by changes in genetic material; Non-heritable variations are caused by the environment, and the genetic material has not changed.

1.Heredity simply refers to the selection of existing genotypes in the parent's genes and the recombination of new expressions, while variations include those obtained directly from the parents and their own.

2.Genetics is mostly species-neutral, i.e., there is no harm and no benefit. But variation is far more bad than good for most species, most variation is bad for species, and only a few are good for adaptation to environmental factors.

3.Heredity is the basic attribute of all living things, it keeps the biological world relatively stable, so that human beings can identify the biological world, including themselves. Variation refers to differences between parental generations, siblings, and individuals of the same species.

4.Heredity is a phenomenon of similarity between parent-child generations, as the saying goes"Plant melons and get melons, plant beans and get beans"。Its essence is that organisms obtain substances from the environment according to the development pathways and methods of their parents, and produce copies similar to those of their parents.

Variation mainly refers to genetic mutations, genetic recombination, and chromosomal variations. Among them, genetic mutation is the root of the genes of new organisms, that is, the root of biodiversity.

First, the meaning is different:

Variations caused by environmental conditions are called non-heritable variations, such as high yields of crops due to changes in fertilizer and water conditions.

Variations caused by changes in genetic material are called heritable variations, such as genetic mutations, genetic recombinations, chromosomal variations.

Second, the impact is different:

The mutation is genetically determined, which means that the mutation is controlled by the genetic material, so it can be passed on to the next generation.

Non-heritable variation is generally a trait that has been changed by the environment and cannot be passed on to the next generation. To put it simply, just look at whether the genetic material has changed, if the genetic material has changed, then the mutation can be inherited, if it has not changed, it cannot. Yu Hong.

Heritable effects

Heritable mutations provide fodder for biological evolution. Heritable variants are mainly genetic mutations, genetic recombinations, and chromosomal variations. A genetic mutation is a change in the structure of a gene, including the addition, deletion, or alteration of DNA base pairs.

Genetic recombination refers to the recombination of genes that control different traits. They can all be cultivated in the wild during the formation of germ cells, which can be passed on to offspring, resulting in mutations in offspring.

In fact, the genetic composition of any population is always subject to change. Changes in the gene frequencies of populations provide natural selection with a large number of individuals that produce variation, i.e., provide raw materials for selection. Only with mutation can there be selection, only with selection can new species be produced, and only with new species can there be evolution.

Refer to the above content: Encyclopedia - Heritable Variations.

Heredity is the trait that is passed from the parent to the offspring! And the change of genetic information of the variant! Base pair sequence changes.

Heredity passes from one generation to the next, and variation is a change in the process of transmission.

Distinguish between heritable and non-heritable variations:

Variations due to changes in genetic material are inherited;

Variations caused by changes in environmental conditions are generally only tabled.

It is present in the present and cannot be inherited.

That said, variation can be divided into two broad categories:

Inherited variations and non-inherited variations.

It is important to highlight here that these two types of variants.

The division is relative.

Because under certain environmental conditions, through the influence and selection of long-term orientation, the accumulation of quantitative changes can be.

Transformed into qualitative change, non-hereditary variation may become hereditary variation.

Heritable variation is variation caused by changes in genetic material;

Non-heritable variations are caused by the environment, genetic material.

No changes have changed.

There are two kinds of variation in organisms, heritable and non-heritable, and changes in genetic material or environmental conditions can cause variation, so judging whether the variation of organisms is genetic variation or non-heritable variation is equivalent to judging whether it is influenced by environmental factors or heredity.

factors. Methods: Mutated females

Males are interbred under pre-mutation conditions to produce offspring, and if the traits before mutation are restored, it is environmental.

caused by factors, it is a variant that is not inherited; Otherwise, it is the result of a change in the genetic material.

If it is a plant, it can also be used for vegetative reproduction.

Method, if the trait before the mutation is restored, it is caused by the environment, and it is a non-inherited variant; Otherwise, it is a heritable variant.

Regularity: Change the living environment of an organism to see if its traits change.

Heritable variation.

It is divided into: gene mutation, chromosomal mutation, and gene recombination.

Non-heritable variation is relatively simple and is generally caused by the environment.

How to tell the difference? It's very simple, depending on the conditions on the question, see whether it is through radiation irradiation, crossbreeding between two species, or some other condition, and then you can easily distinguish.