. Embryology. Embryology; Embryology; genealogy. SPERM PARTLY ENGULFED Fig. 21. The process of fer- tilization. Top: Many sperm reach surface of egg; one sperm starts wave of negativ- ity which excludes all other sperm. Center: The egg reacts to the sperm by forming a fertilization cone which en- gulfs the sperm. Bottom: The sperm head is inside the egg and the egg has formed a fer- tilization membrane within which cleavage and early de- velopment take place. TAIL OUTSIDE FERTILIZATION MEMBRANE. SPERM NUCLEUS EGG NUCLEUS 46. Please note that these images are extracted from scanned page images
. Embryology. Embryology; Embryology; genealogy. SPERM PARTLY ENGULFED Fig. 21. The process of fer- tilization. Top: Many sperm reach surface of egg; one sperm starts wave of negativ- ity which excludes all other sperm. Center: The egg reacts to the sperm by forming a fertilization cone which en- gulfs the sperm. Bottom: The sperm head is inside the egg and the egg has formed a fer- tilization membrane within which cleavage and early de- velopment take place. TAIL OUTSIDE FERTILIZATION MEMBRANE. SPERM NUCLEUS EGG NUCLEUS 46. 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 Barth, Lester G. (Lester George), 1905-1979. New York, Dryden Press
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Keywords: ., boo, bookcentury1900, booksubjectembryology, booksubjectgenealogy
