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.
What is the difference between butterflies and moths? What is the difference between butterflies and moths? Butterflies are mostly brightly colored day-flying insects with long clubbed antennae. Most moths fly at night and lack clubs at the end of their antennae. A group of tropical moths has been found that are closely related to butterflies but they lack clubs on their antennae; they are now considered to be butterflies. Perhaps the best answer that matches our current knowledge is just to say that butterflies are fancy moths..