. The cell in development and inheritance. Cells. a. Fig. 95. — Diagrams of various modes of tetrad-formation. [Hacker.] a. Common starting-point, a double spireme-thread in the germinal vesicle; d. common re- sult, the typical tetrads; b. c. intermediate stages: at the left the ring-formation (as in Diaptomus, Gryllotalpa, Heterocope) ; middle series, complete splitting of the rods (as in Cyclops according to Ruckert, and in Cauthocamptns) ; at tlie right by breaking of the V-shaped rods (as in Cyclops sticnuHs, according to Hacker, and in the salamander, according to vom Rath). bent near the
. The cell in development and inheritance. Cells. a. Fig. 95. — Diagrams of various modes of tetrad-formation. [Hacker.] a. Common starting-point, a double spireme-thread in the germinal vesicle; d. common re- sult, the typical tetrads; b. c. intermediate stages: at the left the ring-formation (as in Diaptomus, Gryllotalpa, Heterocope) ; middle series, complete splitting of the rods (as in Cyclops according to Ruckert, and in Cauthocamptns) ; at tlie right by breaking of the V-shaped rods (as in Cyclops sticnuHs, according to Hacker, and in the salamander, according to vom Rath). bent near the middle to form V-shaped loops (Fig. 96, C\ which finally break transversely near the apex to form the tetrad ^ — a process which clearly gives the same result as before. An exactly similar process seems to occur in the salamander as described by Flemming and ^ Hacker upholds this account ('95, i) in spite of the criticisms of RUckert and vom 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 Wilson, Edmund B. (Edmund Beecher), 1856-1939. New York : The Macmillan company
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectcells, bookyear1896
