The genetics of prokaryotic organisms. This is primarily focused on genes of the single, circular chromosome and extrachromosomal DNA found  in prokaryotes.

Prokaryotic genetics

The genetics of eukaryotic organisms. This describes the genetic processes of eukaryotics that are distinct because their genetic material is contained in a nucleus. 

Eukaryotic genetics

Microbial genetics are classified in the three domains of life:
- Eukaryotic genetics
- Prokaryotic genetics
- Archaeal genetics 

Note:
Although they are not designated as living cells, viral genes also vary in their genetic material, genetic expression and replication compared to the three domains of life.

University of Wisconsin - Madison

Microbial genetics is the study of the microbial cell genetic storage in the form DNA and its mechanisms of replication and expression.

Microbial Genetics

https://openstax.org/details/books/microbiology/

Microbiology covers the scope and sequence requirements for a single-semester microbiology course for non-majors. The book presents the core concepts of microbiology with a focus on applications for careers in allied health. The pedagogical features of the text make the material interesting and accessible while maintaining the career-application focus and scientific rigor inherent in the subject matter. Microbiology’s art program enhances students’ understanding of concepts through clear and effective illustrations, diagrams, and photographs.

Microbiology is produced through a collaborative publishing agreement between OpenStax and the American Society for Microbiology Press. The book aligns with the curriculum guidelines of the American Society for Microbiology.

OpenStax Microbiology Textbook

Classifications of Microbial Genetics

The genetic code refers to mRNA transcripts translated into amino acids to make proteins. This occurs due to the nucleotide triplets called codons that code for amino acids.

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