The creation and growth of components of a given complexity in a random gra
ph process are studied. In particular, the expected number and total size o
f all such components is found. It follows that the largest I-component dur
ing the process is O-p(n(2/3)) for any given l. The results also yield a ne
w proof of the asymptotic behaviour of Wright's coefficients. (C) 2000 John
Wiley & Sons, Inc.