NUMBER OF CHROMOSOMES 



145 



B 



r-r-' 





Fig. 70. 



Normal and abnormal polar body formation in <l--'--e''i-/^j't;4tht;n ""^"^txS^slo^^^oL 

 A, normal series : B, abnormal series. In each, i is anaphase I . 2 "^^^^'^^l^^^^^^n series B. showing 

 cc^mpleted ; 4. fertiUzation, the 6 nucleus below m ^^^^^^^,^'f ^,^^\• ^ ^^^^^ 

 three chroiosomes in the germ track, and only one polar body, ^Mth tNN o cdromosomes. 



