Word: ovum
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Dates: during 1923-1923
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...have had to do with: 1) the relative vigor of the parents, the more vigorous giving his or her sex to the offspring; 2) the position of the ovaries, eggs originating from the right ovary producing males, those from the left, females; 3) the state of nutrition of the ovum, a high degree of nourishment in the mother producing female offspring, and vice versa. This last might be an explanation for the well known birth of more boys than girls following wars and famines, which is now, however, believed to be due to other causes. But all of these notions...
...theory is somewhat supplemental to the established one, and his data have been submitted to the French Academy. He objects to the idea that the origin of sex differences is to be found in differences in the male cells only, and claims that both the spermatozoon and the ovum have activating " microcellules." These seek their complement in the other sex cell, but if the male micro-cellules preponderate in number over the female the result will be a male embryo, and vice versa. But Alich also believes that various other factors affect this potential energy of the germ cell, including...