Written By: Plasmid, in microbiology, an extrachromosomal genetic element that occurs in many bacterial strains. Plasmids are circular deoxyribonucleic acid (DNA) molecules that replicate independently of the bacterial chromosome. They are not essential for the bacterium but may confer a selective advantage.
A gnat /ËnÃ¦t/ is any of many species of tiny flying insects in the Dipterid suborder Nematocera, especially those in the families Mycetophilidae, Anisopodidae and Sciaridae. They can be both biting and non-biting. Most often they fly in large flocks resembling clouds.
1 Question: I have gnats, I think, and I want to know how to get rid of them or how much it would be for you to get rid of them. 2  They are out of control. 3  Question: We have these pesky, small flies. 4  We have no fruit plants.nswer: If you have gnats in the house, it usually means the presence of one or both of these small flies: FUNGUS GNATS. If the flies are small, black, and flying around windows or potted plants; then they are probably fungus gnats.