Kappa, a mischievous monster found in Japanese folklore, supposedly lives in a stream or pond, and has webbed hands and feet so that it's good at swimming. Human hands also have an interdigital web in the early embryo, but it disappears by apoptotic progr

2015 ◽  
Vol 20 (10) ◽  
pp. i-i
2013 ◽  
pp. 294-312
Author(s):  
Samuel R. Wells
Keyword(s):  

Evolution ◽  
2010 ◽  
Vol 64 (6) ◽  
pp. 1558-1568 ◽  
Author(s):  
Campbell Rolian ◽  
Daniel E. Lieberman ◽  
Benedikt Hallgrímsson
Keyword(s):  

2013 ◽  
Vol 9 (2) ◽  
pp. 20120999 ◽  
Author(s):  
Kyriacos Kareklas ◽  
Daniel Nettle ◽  
Tom V. Smulders

Upon continued submersion in water, the glabrous skin on human hands and feet forms wrinkles. The formation of these wrinkles is known to be an active process, controlled by the autonomic nervous system. Such an active control suggests that these wrinkles may have an important function, but this function has not been clear. In this study, we show that submerged objects are handled more quickly with wrinkled fingers than with unwrinkled fingers, whereas wrinkles make no difference to manipulating dry objects. These findings support the hypothesis that water-induced finger wrinkles improve handling submerged objects and suggest that they may be an adaptation for handling objects in wet conditions.


2006 ◽  
Vol 12 (7) ◽  
pp. 603-606 ◽  
Author(s):  
Joon-Mo Yang ◽  
Chunho Choi ◽  
Ji Hun Yu ◽  
Kwang-Sup Soh ◽  
Sun Mi Choi ◽  
...  

2015 ◽  
Vol 158 (1) ◽  
pp. 132-140 ◽  
Author(s):  
Lia Betti ◽  
Stephen J. Lycett ◽  
Noreen von Cramon-Taubadel ◽  
Osbjorn M. Pearson

Author(s):  
William Theurkauf

Cell division in eucaryotes depends on coordinated changes in nuclear and cytoskeletal components. In Drosophila melanogaster embryos, the first 13 nuclear divisions occur without cytokinesis. During the final four divisions, nuclei divide in a uniform monolayer at the surface of the embryo. These surface divisions are accompanied by dramatic changes in cortical actin and microtubule structure (Karr and Alberts, 1986), and inhibitor studies indicate that these changes are essential to orderly mitosis (Zalokar and Erk, 1976). Because the early embryo is syncytial, fluorescent probes introduced by microinjection are incorporated in structures associated with all of the nuclei in the blastoderm. In addition, the nuclei divide synchronously every 10 to 20 min. These characteristics make the syncytial blastoderm embryo an excellent system for the analysis of mitotic reorganization of both nuclear and cytoskeletal elements. However, the Drosophila embryo is a large cell, and resolution of cytoskeletal filaments and nuclear structure is hampered by out-of focus signal.


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