62 



Reproduction and Meiosis 



First Telophase. After the anaphase chromosomes have 

 reached their respective poles, they frequently become very long 

 and they may largely uncoil as in mitosis. A new nuclear mem- 

 brane may form around each group of chromosomes, constituting 



Fig. 21, Metaphase and anaphase of the first meiotic division in two 

 plants with chromosomes of very different size: (a) metaphase of Gasteria 

 nigricans; (b) anaphase of Gasteria laetepunctata ; (c) metaphase of Cap- 

 sella (Bursa) rubella; (d) anaphase of Capsella grandifiora. In Gasteria 

 there are four pairs of very large and three pairs of much smaller chromo- 

 somes. In these species of Capsella there are eight pairs of very small 

 chromosomes, (a) and (b) X930; (c) and (d) circa X2000. Camera 

 lucida drawings. 



two daughter nuclei, a nucleolus may appear in each nucleus, 

 and a new cell wall may now form, dividing the original cell 

 into two. However, sometimes the first telophase is apparently 

 dispensed with, and the chromosomes may pass unchanged from 

 the first anaphase into the second prometaphase. 



Interkinesis. After the first telophase, the daughter nuclei 

 sometimes go into a typical resting stage just as they do after 



