Figure 19.20. Polar body formation in the oocyte of the whitefish Coregonus.

Figure 19.20

Polar body formation in the oocyte of the whitefish Coregonus. (A) Anaphase of first meiotic division, showing the first polar body pinching off with its chromosomes. (B) Metaphase (within the oocyte, arrow) of the second meiotic division, with the first polar body still in place. The first polar body may or may not divide again. (From Swanson et al. 1981; photographs courtesy of C. P. Swanson.)

From: Oogenesis

Cover of Developmental Biology
Developmental Biology. 6th edition.
Gilbert SF.
Sunderland (MA): Sinauer Associates; 2000.
Copyright © 2000, Sinauer Associates.

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