. The organism as a whole, from a physicochemical viewpoint. Biology; Mendel's law. Fig. 3. Pive-days-old larvas of two closely related forms of sea urchins (S. purpuratus 9 and S. franciscanus cf). In this case the larva has also paternal characters as shown by the skeleton. eggs fertilized with starfish sperm develop at first perfectly normally they begin to die in large numbers on the second and third day of their development, and only a very small number live long enough to form a skeleton; and these are usually sickly and form the skeleton considerably later than the pure breed. It is not
. The organism as a whole, from a physicochemical viewpoint. Biology; Mendel's law. Fig. 3. Pive-days-old larvas of two closely related forms of sea urchins (S. purpuratus 9 and S. franciscanus cf). In this case the larva has also paternal characters as shown by the skeleton. eggs fertilized with starfish sperm develop at first perfectly normally they begin to die in large numbers on the second and third day of their development, and only a very small number live long enough to form a skeleton; and these are usually sickly and form the skeleton considerably later than the pure breed. It is not quite certain whether the sickliness of these hetero- geneous hybrids begins or assumes a severe character 1 Loeb, J., King, W. O. R., and Moore, A. R., Arch. f. Entwicklngs- mech., 1910, xxix., 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 Loeb, Jacques, 1859-1924. New York, London, Putnam's Sons
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