Journal of experimental zoology . Fig. 12 Musca domestica; frequency distribution of head-lengths of 465spermatozoa from left testis. Valuein^ 34 2 . Frequency 0 0 1 8 5 11 14 16 42 36 38 19 43 54 53 39 , 32 19 17 7 43 5 3 10 205 206 CHARLES ZELENY AND E. C. FAUST. 3,).9 Fig. 13 Musca domestica; frequency distribution of head-lengths of 7G9spermatozoa f
Journal of experimental zoology . Fig. 12 Musca domestica; frequency distribution of head-lengths of 465spermatozoa from left testis. Valuein^ 34 2 . Frequency 0 0 1 8 5 11 14 16 42 36 38 19 43 54 53 39 , 32 19 17 7 43 5 3 10 205 206 CHARLES ZELENY AND E. C. FAUST. 3,).9 Fig. 13 Musca domestica; frequency distribution of head-lengths of 7G9spermatozoa from same testis as the one in figure 12. Valuein/i Frequency 2 0 7 2 4 14 20 29 bO 43 60 79 57 51 75 68 43 44 36 34 23 13 13 10 5 5 2 These agree well with the values expected from the spermato-genesis determinations, which are between : and This agreement strengthens the view that the two classesindicated by the bimodality of the variation curve are actu-ally related to difference in chromatin content as observed inspermatogenesis. There is an asymmetry of distribution in all three sets. Thegroup with the larger individuals is slightly greater than thegroup with the smaller individuals. The significance of thisasymmetry is uncertain. It may be due merely to one of theuncont
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectzoology, bookyear1904
