Sentence examples for define a species from inspiring English sources
The problem lies in how biologists define a species.
And he helped explain the factors that define a species.
Mayr's approach was first to define a species as an interbreeding population that is "reproductively isolated" from another interbreeding population.
A variety of abiotic factors, such as soil type and climate, also define a species' niche.
Most biologists define a species as a group that is reproductively isolated — it cannot interbreed or exchange genes with any other.
We know for example that colour is extremely variable in many species and some occasional colour types keep recurring (like all black forms or albinos) so using this to help define a species is a bad idea, but something more consistent and less variable (like the number of vertebrae or number of toes) is likely to form a good character.
Using a cross-search strategy, 1,820 putatively immune-related sequences were selected to design oligonucleotide probes and define a species-specific Immunochip (DNA microarray).
Therefore, we define a species-entity relation as a pair r=〈 e, s〉, where e is an entity mention and s is a species word, and r is a positive relation if e is of the species indicated by s, and a negative relation otherwise.
CORRECTION: Many of us are familiar with the biological species concept, which defines a species as a group of individuals that actually or potentially interbreed in nature.
Once again, every genetic marker that the team examined consistently showed that the two golden jackal lineages are genetically distinct and are following independent evolutionary trajectories -- which are several of the main criteria for defining a species.
This is very similar to a definition of "species" by the geneticist Alan Templeton, who said that species were "the most inclusive population of individuals having the potential for phenotypic cohesion through intrinsic cohesion mechanisms", "that defines a species as the most inclusive group of organisms having the potential for genetic and/or demographic exchangeability".
