1 - 5 of 5 articles
Dollo's law of the non-reversibility of the phyletic development applies to reduced and missing organs as well as to functioning ones which have adapted their shapes to new conditions of living. Such an organ will never again regain its old structure, not even if the old conditions should...
In biology, the “field” concept is used in different ways. Therefore, its meaning in biology as compared to that in physics, and the relation between the conceptions of “gradient” and “field” are studied.
The word “Umwelt” is not translated as yet and can perhaps not be translated. In its orginal and well known sense, inaugurated byUexküll, it means of the relations of an organism to its surroundings only those going over the receptive (sense-) organs and the effective organs (muscles, glands),...
Great theoretical value has always been attached toBoveri's discovery as regards chromatin diminution inAscaris, for this discovery appeared to expose the mechanism causing the propagative cells, in which all chromatin remains, to originate an entirely new organism, whereas the soma cells of...
Die griechische Weltauffassung unterscheidet sich van der modernen durch den Gedanken der Begrenztheit des Weltalls, das sich dem spekulativen Blick seinem Wesen nach erschliesst. Die inPlaton's Timaios gipfelnde Kosmologie bestimmt das Weltall nach den Wesensgesichtspunkten der Endlichkeit, der...
Read and print from thousands of top scholarly journals.
Continue with Facebook
Log in with Microsoft
Already have an account? Log in
Bookmark this article. You can see your Bookmarks on your DeepDyve Library.
To save an article, log in first, or sign up for a DeepDyve account if you don’t already have one.
Sign Up Log In
To subscribe to email alerts, please log in first, or sign up for a DeepDyve account if you don’t already have one.
To get new article updates from a journal on your personalized homepage, please log in first, or sign up for a DeepDyve account if you don’t already have one.