Compared with the old textbooks, the concepts of diploid, polyploid and haploid in the new textbooks are more vague, and there is no very clear definition. Only through clear examples, several terms are put forward-which means that the new textbooks are more related to the cultivation and examination of core literacy, while the language and literature that argue about concepts are gradually abandoned, such as the analysis of cell totipotency. The following are some specific discussions:

By comparison, it can be concluded that the description of haploid in the new and old textbooks is the same, but the description of polyploid has changed: the old textbooks emphasize that the starting point of development is "fertilized egg".

However, the new textbook has deleted this development starting point, which means that the development starting point of "fertilized eggs" may be modified, such as diploids formed by haploid breeding. (The reason why it is diploid is judged according to the description in the third edition of the university textbook Genetics. )

After careful investigation, it will be found that the judgment made in the third edition of the university textbook Genetics is that a table distinguishing haploid from polyploid in the book is different from the interpretation of the textbook by high school teachers or test questions:

The description of haploid in college textbooks is that individuals with only one genome are haploid, and the following description is the same as that in high school textbooks. However, the high school textbooks do not explain how many genomes there are in haploids, which may be because teachers are worried that the changes will be too great for them to accept at once, or they may refer to other versions of different textbooks for neutralization.

Therefore, it is considered that it is necessary to properly adhere to the judgment of problem-solving skills at the starting point of development, but also to properly dilute it in order to be consistent with college textbooks.

Any organism that develops from a fertilized egg and contains two chromosomes in its somatic cell is called diploid. In addition, plants cultured from diploid somatic cells and plants cultured from haploids containing only one set of chromosomes are also called diploids. It can be represented by 2n. People and almost all higher animals, as well as more than half of higher plants, are diploid.