FACTUKS IX OXTOGEXY 



263 



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•jG. 148. — Maturation of the egj? of Cyclops (the full number of cnromnsomes is not 

 shown): A, Chromosomes already split longitudinally; B, chromatin masses with 

 indication of transverse fission to form the tetrads; C, the younR tetrads arran^inR 

 themselves on the first polar l)ody spindle; D, tetrads in first body spindle; E, 

 separation of the dyads in the same; F, position of the dyads in the second polar 

 body spindle, the first polar body being reaUy above the margin of the egg. (After 

 Riickert.) 



