Heredity and variation are one of the basic characteristics of living things. Heredity usually refers to the phenomenon of similar traits between parents and children during seed transmission. In genetics, heredity refers to the ability that genetic material is passed on from generation to generation, and parents' traits are passed on to their offspring through genetic material, which is called heredity.

Variation usually refers to the differences in traits between parents and their offspring. Trait variation caused by genetic material changes can be passed on to future generations. The ability of an organism to produce trait variation is called variability.

The phenomenon that biological parents can produce offspring similar to themselves is called heredity. The basis of genetic material is deoxyribonucleic acid (DNA), and parents pass on their genetic material DNA to their offspring.

Moreover, the genetic traits and species remain relatively stable. The reason why life can continue from generation to generation is mainly due to the inheritance of genetic material from generation to generation in the biological process, which makes the offspring have similar characteristics to the previous generation.

Extended data:

Heredity is a similar phenomenon between parents and children, that is, as the saying goes, "As you sow, you reap". Its essence is that organisms obtain substances from the environment according to their parents' development methods and ways, and produce copies similar to their parents.

Inheritance is relatively stable, and organisms will not easily change the development path and mode inherited from their parents. Therefore, parents' looks and excellent personality are likely to reappear in future generations, even resembling their parents. Parents' defects and genetic diseases may also be passed on to future generations.

Inheritance is the basic attribute of all living things, which keeps the biological world relatively stable and enables human beings to know the biological world including themselves. Variation refers to the differences between parents and children, siblings and individuals of the same species. As the saying goes, "One mother gives birth to nine children, and nine children are different." There are no two absolutely identical individuals in the world, including twins, which fully shows that genetic stability is relative and variation is absolute.

References:

Baidu encyclopedia-gene variation