Variable species


  • Chambers's Twentieth Century Dictionary
    • Variable species any species with marked rate of variability
    • ***


Chambers's Twentieth Century Dictionary
Fr.,—L. variabilis.


In literature:

Why should the degree of sterility be innately variable in the individuals of the same species?
"On the Origin of Species" by Charles Darwin
Since the appearance of the first edition of "The Origin of Species" fluctuating variability has been thoroughly studied by Quetelet.
"Darwin and Modern Science" by A.C. Seward and Others
The difficulty in distinguishing variable species is largely due to the varieties mocking, as it were, other species of the same genus.
"On the Origin of Species" by Charles Darwin
Don't forget me, if you ever stumble on cases of the same species being MORE or LESS variable in different countries.
"More Letters of Charles Darwin" by Charles Darwin
The variability of certain genera or groups of species strikes me as a very odd fact.
"More Letters of Charles Darwin Volume II" by Charles Darwin
Secondary sexual characters are highly variable, and such characters differ much in the species of the same group.
"On the Origin of Species by Means of Natural Selection" by Charles Darwin
A species may be highly variable, but distinct races will not be formed, if from any cause selection be not applied.
"The Variation of Animals and Plants Under Domestication, Volume II (of 2)" by Charles Darwin
This is quite a variable species in color and size, as well as manner of growth.
"The Mushroom, Edible and Otherwise" by M. E. Hard
A very variable species in many particulars.
"The North American Slime-Moulds" by Thomas H. (Thomas Huston) MacBride
The species we are now considering is also very variable both in its ground colour and the markings of the wings.
"Butterflies and Moths" by William S. Furneaux

In science:

Thus, we see that model II corresponds to model I with a specific choice of the function f (~x), with the map of the complex variable z to the inverse of the strength of the potential 2πa and m2 to −E .
Hopping between Random Locations: Spectrum and Instanton
It is a random variable since it depends on the specific choice of the sequences.
High precision simulations of the longest common subsequence problem
This specification differs from model to model and since various models are considered here, we don’t wish to be more explicit about these variables at the present level.
Random walks in random environment on trees and multiplicative chaos
These numbers will be random variables with some specific dependence properties that will be defined later.
Random walks in random environment on trees and multiplicative chaos
Except where otherwise specified, all random variables are assumed to be defined on some background probability space (Ω, F , P), and E denotes expectation with respect to P.
Poisson-Kingman partitions