Final answer:
Genetic variation in bacterial populations cannot result from meiosis, but it can occur through other mechanisms such as a. transduction, c. mutation, and b. conjugation.
Step-by-step explanation:
Genetic variation in bacterial populations cannot result from meiosis because meiosis is a process that only occurs in eukaryotic cells, not in prokaryotic bacteria. However, genetic variation in bacterial populations can occur through other mechanisms such as transduction, mutation, and also conjugation.
In addition to this, the process of transduction involves the transfer of genetic material between bacterial cells by viruses. Mutation is the spontaneous change in the DNA sequence, which can result in new genetic variations. Conjugation is a process where bacteria directly exchange genetic material, usually plasmids, with other bacteria.