It seems to me more probable that the gemmules affect the ovaria alone.
"More Letters of Charles Darwin" by Charles Darwin
Gemmules, in reproductive organs.
"More Letters of Charles Darwin Volume II" by Charles Darwin
It is supposed that fecundation is chiefly necessary to give to the gemmules the requisite amount of nourishment to insure development.
"Plain Facts for Old and Young" by John Harvey Kellogg
Every gemmule may multiply itself by a process of scission into any number of equivalent gemmules.
"On the Genesis of Species" by St. George Mivart
The direct evidence tends to show that these free gemmules do not exist.
"Are the Effects of Use and Disuse Inherited?" by William Platt Ball
Pure gemmules in combination with hybridised gemmules would lead to partial reversion.
"The Variation of Animals and Plants Under Domestication, Volume II (of 2)" by Charles Darwin
Gemmule-spicules, which form a characteristic feature of the Spongillidae, are very seldom absent when the gemmules are mature.
"Freshwater Sponges, Hydroids & Polyzoa" by Nelson Annandale
GEMMULES, sexual selection of, i.
"The Descent of Man and Selection in Relation to Sex" by Charles Darwin
Thus, they correspond to Herbert Spencer's physiological units, Darwin's gemmules, De Vries' pangenes, and Hertwig's idioblasts.
"The Biological Problem of To-day" by Oscar Hertwig
Gemmules, 47, 145, 155.
"Darwin, and After Darwin, Volume II (of 3)" by George John Romanes