Gastrulation Somite Formation and Segmentation

As the embryonic primordium begins to increase in length, its midventral cells sink inward to form a transient, longitudinal gastral groove (Figure 20.9A). The invaginated

FIGURE 20.7. Stages in elongation and segmentation of germ band in Zootermopsis (Isoptera) (A-C) and Bruchidius (Coleoptera) (D-F). [After D. T. Anderson, 1972a,b, The development of hemimetabolous insects, and the development of holometabolous insects, in: Developmental Systems: Insects, Vol. I (S. J. Counce and C. H. Waddington, eds.). By permission of Academic Press Ltd., and the author.]

Beekeeping for Beginners

Beekeeping for Beginners

The information in this book is useful to anyone wanting to start beekeeping as a hobby or a business. It was written for beginners. Those who have never looked into beekeeping, may not understand the meaning of the terminology used by people in the industry. We have tried to overcome the problem by giving explanations. We want you to be able to use this book as a guide in to beekeeping.

Get My Free Ebook


Post a comment