The formation ofmale gamete(sperm)is known as spermatogenesis. Spermatogonia undergo many numbers of stages to give rise tospermatids. Each spermatogonium gives rise to four spermatids. Spermatids get embedded in the Sertoli cell and get transformed into sperms. Spermatogenesis occurs inseminiferous tu...
The male olfactory system was also found to be extremely sensitive to AD, detecting it to near picomolar concentrations. Together with previous studies that have shown water-borne AD to increase male aggressive behavior while suppressing responsiveness to female pheromones, this study establishes AD as...
This polyembryonic process is directly analogous to cloning in diploid organisms. Most of the literature available on red seaweeds suggest male gamete dispersal, and therefore fertilization is extremely limited in both space and time (Searles, 1980; Santelices, 1990). First, red algal sperm (...
an important role in the colonization process at treeline, large levels of gene flow from outside were maintained, suggesting that the potential advantages of local adults (such as local adaptation, proximity to the colonization area, phenological synchrony) did not prevent a large gamete immigration...