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- it is present in all extant living organisms.
- it has always been under very strong stabilizing selection, such that very few differences accumulate per year.
- the gene performance the same function in all living things .
Question 18 (3 points) Saved What characteristics make the gene for small-subunit ribosomal RNA particularly well...
10. Write a one-page summary of the attached paper? INTRODUCTION Many problems can develop in activated sludge operation that adversely affect effluent quality with origins in the engineering, hydraulic and microbiological components of the process. The real "heart" of the activated sludge system is the development and maintenance of a mixed microbial culture (activated sludge) that treats wastewater and which can be managed. One definition of a wastewater treatment plant operator is a "bug farmer", one who controls the aeration...