Archive image from page 111 of Cytology, with special reference to. Cytology, with special reference to the metazoan nucleus cytologywithspec00agar_0 Year: 1920 96 CYTOLOGY CHAP. already haploid. In such eggs, if caused to develop parthenogenetically, the haploid egg nucleus acts in cleavage exactly like the zygote nucleus in a fertilized egg. The resulting embryo is in consequence haploid, as has been demonstrated by many observers, though originally Delage erroneously supposed that the diploid number was restored by an act of auto-regulation (Wilson, Toxopneustes, 1901; Hindle, Strongyloce
Archive image from page 111 of Cytology, with special reference to. Cytology, with special reference to the metazoan nucleus cytologywithspec00agar_0 Year: 1920 96 CYTOLOGY CHAP. already haploid. In such eggs, if caused to develop parthenogenetically, the haploid egg nucleus acts in cleavage exactly like the zygote nucleus in a fertilized egg. The resulting embryo is in consequence haploid, as has been demonstrated by many observers, though originally Delage erroneously supposed that the diploid number was restored by an act of auto-regulation (Wilson, Toxopneustes, 1901; Hindle, Strongylocentrotus, 1911, etc.). Eggs which do not normally mature until the spermatozoon has entered vary in their reaction to the artificial developmental stimulus. Some, such as the annelid Thalassema (Lefevre, 1907), on being subjected to the appropriate chemical stimulus undergo maturation, throwing out pti , . , S ♦ v -,.V ,
Size: 2431px × 823px
Photo credit: © Bookive / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: 1900, 1920, agar_w_e_wilfred_eade_1882_1951, americana, archive, blc, book, bookauthor, bookcentury, bookcollection, bookcontributor, bookdecade, bookpublisher, booksubject, bookyear, cells, drawing, historical, history, illustration, image, london_macmillan_and_co_limited, page, picture, print, reference, vintage, wellesley_college_library
