Male ejaculates are able to modify female behaviour in advantageous ways, often increasing male fitness. This is particularly beneficial to species where the sperm from the last male
Intrasexual selection (in contrast to intersexual selection) is when members of the same sex (within a species) compete with each other in order to gain opportunities to mate
Introduction It is believed that originally, species reproduced by asexual reproduction. This is where species are able to reproduce through mitosis individually, this means the descendants of the
Introduction Fertilisation is an internal process in mammals, the gamete cells however are not fully mature when they leave the gonad (either testicle or ovary) and so continue
Introduction Spermatogenesis is the biological process whereby spermatogonia (the germ cell) develop into spermatozoa (the mature sperm cells). This process takes place in the seminiferous tubules of the
