What is the relationship between heredity and variation, and what is the relationship between heredi

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.

Because of the "hereditary" and "child-like fatherhood", children are very much like their parents. However, if we look closely, we will find that daughters, although they resemble their mothers, are not identical; Maybe her mouth is less like her mother and more like her father.

The son's nose is high, like his father, but his eyes are like his mother's. There are also children who are not like their fathers or mothers, but rather like uncles. Between parents, children, brothers and sisters, it has never been found that two people are exactly the same, and that their siblings are similar and different.

There is an old saying in my country: "A mother gives birth to nine sons, and even a mother has ten likes." "Even twins are easily identified by their parents, and even around us, we can see normal sighted parents, but they are born with a high degree of myopia.

daughter's come. This phenomenon of discrepancies between parents and offspring, as well as between individual offspring, is called variation.

Heredity and variation are common phenomena in the biological world, and they are opposites and unified. In human beings, heritability maintains the constancy of the morphological and physiological characteristics of human beings, so that human beings can reproduce from generation to generation, and under certain conditions, mutation changes the characteristics of the species, so that it can continue to move forward and develop. Generally speaking, most of the variations in human beings are within the normal range of life activities, and these variations are consolidated and re-inherited in the offspring.

Without variation, the biological world loses the conditions for progress and development, and heredity can only be a simple repetition; Without heredity, variation cannot accumulate, it loses its meaning, and organisms cannot evolve.

What is heredity and variation.

First of all, I deny the answer upstairs.

The genetic and variant differences are as follows:

1 Heredity is directed, and variation is not.

2 The latter is the source and foundation of the former.

3 Variation is the cause of evolution.

4 Heredity is the phenomenon of similarity between generations, and variation is the difference between organisms.

5 Both heredity and variation are the result of adaptation of organisms to their environment.

Refers to the variation caused by changes in the genetic material in an organism, which can be passed on to future generations.

Heredity: There are similarities in traits between parents and children and between offspring, indicating that sex or reputation can be passed from parent to offspring, a phenomenon called heredity. Genetics is the study of this phenomenon, and it is known that the main cluster of life on Earth is DNA as the genetic material.

In addition to heredity, the environment and the interaction between the ring and heredity are the factors that determine biological characteristics. Heredity originates from the informationization or rhythmization of early life processes.

Variation: Variation is a natural phenomenon in which organisms reproduce offspring and is the result of heredity. The phenomenon of differences in the performance of traits between parents and children is called variation. It can be divided into heritable variants and non-heritable variants.