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.
Fundamentally, spores and gametes are very different. One difference is in the type of reproduction that each are involved in. Spores are used in asexual reproduction, while gametes are used in sexual reproduction.Another difference is in what each needs to develop into the next stage in the life cycle.A spore has the ability to grow into the adult gametophyte all by itself.he structure that produces a gamete is already haploid and so does not need to change the number of chromosomes it has in order to produce haploid gametes. So, hopefully this post explains how different spores and gametes are. I wanted to highlight this information because I see it as a common source of error.