Zöology; a textbook for colleges and universities . the sexualdifferences as merely means to an end. The egg cellcarries the cytoplasm with which to support the firststages of development; it cannot seek the sperm, norcould two egg cells, thus provided, seek one the sperm, free from baggage, which the Romanstruthfully called impedimenta, can travel in searchof its mate; but two sperms would not have betweenthem enough nutrient substance to support the earlycell divisions. The differences now appear to have ameaning, and it is interesting to note that those char-acteristics which dis
Zöology; a textbook for colleges and universities . the sexualdifferences as merely means to an end. The egg cellcarries the cytoplasm with which to support the firststages of development; it cannot seek the sperm, norcould two egg cells, thus provided, seek one the sperm, free from baggage, which the Romanstruthfully called impedimenta, can travel in searchof its mate; but two sperms would not have betweenthem enough nutrient substance to support the earlycell divisions. The differences now appear to have ameaning, and it is interesting to note that those char-acteristics which distinguish the gametes, also more orless distinguish the sexes themselves in their relation toone another. 5. We may have our opinion concerning the utility Mechanismof sex, but it is quite another matter to decide why terminationindividuals are male or female. Many opinions havebeen expressed, but it is only rather recently (1902) •82 ZOOLOGY that much real light has been thrown on the it came to be realized that the chromosomes were.
Size: 2550px × 980px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, booksubjectzoology, bookyear1920
