. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FIGURE 46 Brown and Marsland (1936) : There is a quantitative decrease in the gel value of dividing eggs as the hydrostatic pressure is increased. Under high pressures the furrow regresses. No one has yet recorded the effect of temperature, hypotonicity and lack of calcium ion upon the cortex of the dividing Arbacia egg, although these observations have been made upon the unfertilized egg. A brief summary of this work follows: Costello (1938) : It takes progressively longer to fragment the eggs as the tem- perature is lowere
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FIGURE 46 Brown and Marsland (1936) : There is a quantitative decrease in the gel value of dividing eggs as the hydrostatic pressure is increased. Under high pressures the furrow regresses. No one has yet recorded the effect of temperature, hypotonicity and lack of calcium ion upon the cortex of the dividing Arbacia egg, although these observations have been made upon the unfertilized egg. A brief summary of this work follows: Costello (1938) : It takes progressively longer to fragment the eggs as the tem- perature is lowered. Cole (1932) and Harvey (1943) : It takes longer to fragment eggs in hypotonic than in isotonic solutions. Harvey (1945) : Arbacia eggs break less readily in solutions possessing calcium ions than in solutions lacking calcium ions. These treatments (low temperature, hypotonicity and calcium ion) are pre- cisely the ones which favor the development of a cleavage stalk. It is possible that. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological Laboratory
Size: 1125px × 2221px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
