In plants, the ability to recognize self from nonself plays an important role in fertilization, because self-fertilization will result in less diverse offspring than fertilization with pollen from another individual.
The fact that in the lowly forms of life the function greatly exceeds the form in complexity shows conclusively that there is an inner entity synthesizing these functions, and that evolution in all its phases is but the outer response to the inner idea, and, as ideas necessitate an ideator, an inner entity is therefore necessitated.
A sublattice of a lattice is a subset that is closed under pairwise infima and suprema.
'We're recruiting an extra signaller for Nunthorpe, the only box [signal box] on the branch', says Chris Gee, Head of Operations - North at Network Rail in York. 'From December Nunthorpe will be staffed 24/7'.
