organism articles
What is the central criterion of the Biological Species Concept (BSC)?
Who famously articulated the influential Biological Species Concept?
Barriers preventing mating attempts or preventing fertilization from occurring are classified as what type of reproductive isolation?
Which isolation mechanism occurs when two species breed during different seasons or times of day?
What is the outcome when hybrid offspring survive but are sterile, such as the mule?
The BSC is considered unusable for which type of organism due to its reliance on sexual reproduction?
What is the primary criterion used by the Morphological Species Concept to distinguish species?
What primary evidence defines a species according to the Phylogenetic Species Concept (PSC)?
Which species concept tends to recognize a much larger number of species compared to the BSC?
What postzygotic barrier occurs if first-generation hybrids are fertile, but subsequent generations produced by those hybrids are sterile or non-viable?
Where do the trillions of microorganisms that form the human microbiome primarily reside?
How does the genetic contribution of the microbiome compare to the human genome?
What is the current suggested ratio of microbial cells to human cells in the body?
What digestive role do gut microbes fulfill regarding certain plant-based foods?
Which crucial vitamins are explicitly mentioned as being synthesized by gut microbes?
What sophisticated role do gut microbes play regarding the immune system?
What term describes the prevention of pathogen foothold due to resource competition by resident microbes?
Through which pathways can gut microbes influence brain function?
What condition results from a significant disruption in the balance of the internal microbial ecosystem?