Journal of experimental zoology . 00 CO QO 00 00 CO Fig. 32 Melanoplus differentialis; frequency distribution of head-lengths of481 spermatozoa from left testis. Value in ji Frequency 3 1 3 6 7 3 7 5 12 18 22 23 21 34 42 55 41 22 38 32 26 20 13 0 8 7 2 2 0 1 I. Fig. 33 Melanoplus differentialis; frequency distribution of head-lengths of1008 spermatozoa from same left testis as the ones in figures 32 and 34. Value in ti 7
Journal of experimental zoology . 00 CO QO 00 00 CO Fig. 32 Melanoplus differentialis; frequency distribution of head-lengths of481 spermatozoa from left testis. Value in ji Frequency 3 1 3 6 7 3 7 5 12 18 22 23 21 34 42 55 41 22 38 32 26 20 13 0 8 7 2 2 0 1 I. Fig. 33 Melanoplus differentialis; frequency distribution of head-lengths of1008 spermatozoa from same left testis as the ones in figures 32 and 34. Value in ti Frequency 1 3 1 3 2 6 11 17 7 11 16 41 46 48 50 70 77 77 88 67 93 92 58 41 29 20 15 10 2 0 3 3 224 SIZE DIMORPHISM IN SPERMATOZOA 225 distribution* is not that of a simple variation curve and un-doubtedly several factors are involved in size three curves however show distinctly a tendency to a majorbimodal subdivision. The minor modes may be due to inequali-ties in pairs of chromosomes that have no relation to the X chro-mosome or of course they may be due to any one or more of thesources of error mentioned on pages 196 to 201.
Size: 2227px × 1122px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectzoology, bookyear1904
