Regarding the biological concept of genetics, what is genetics? What is the significance of genetics

If not a problem. It's just that I think the concept and understanding are more important. Due to the number of words, it is a little troublesome to write. So I still don't write it.

Genetics is a discipline that studies genes with the aim of trying to explain what genes are and how they function. The role of genes can be thought of as traits inherited from distant ancestors in living organisms, for example, genes are often the cause of children looking like their parents.

One of the directions explored in genetics is to determine which traits can be inherited and to explain how these traits are passed down from generation to generation.

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Genetic material is in the nucleus, and genetics is a branch of biology that studies the heredity and variation of organisms, that is, the study of similarities and differences between parents and children.

The research scope of genetics includes three aspects: the nature of genetic material, the transmission of genetic material and the realization of genetic information. The nature of genetic material includes its chemical nature, the genetic information it contains, its structure, organization, and changes, etc.; The transmission of genetic material includes the replication of genetic material, the behavior of chromosomes, the laws of heredity, and the quantitative changes of genes in a population. The realization of genetic information includes the primary function of genes, the interaction of genes, the regulation of gene action, and the mechanism of genes in ontogeny.

Genetics is most closely related to biochemistry and is also closely related to many other branches of biology. For example, the relationship between genetics and developmental biology occurs; the relationship between behavioral genetics and behavioral biology; the relationship between ecogenetics and ecology, etc. In addition, there is a close relationship between genetics and taxonomy, not only because of the use of DNA base components and chromosomes as indicators in taxonomy, but also because the essence of species must also be understood from the perspective of genetics.

The law of segregation, the law of independent distribution, and the law of linkage inheritance are the three basic laws of genetics.

Genes and genetic code.

A gene is a specific nucleotide sequence on a DNA molecule of DNA. It has a genetic function of recombination, mutation, transcription, or regulation of other genes. The genetic code is the code for genetic information, which is made up of a combination of four bases contained in a DNA molecule.

In the four bases of A, T, G, and C, every three form a group to form a "codon", or "triplet code", just like the Morse code of the telegraph, shouldering the important mission of transmitting information. The four letters, the combination of three and three, can form 64 combinations, that is, the DNA macromolecule of DNA contains 64 kinds of codons, which can not only constitute 20 kinds of amino acids of proteins, but also have twice as much surplus. This is because one amino acid has a maximum of 6 ciphers, in addition to reading the three ciphers at the end of the cipher.