Jacob Dunn (Division of Biological Anthropology) discusses why sperm are the most diverse cells found among animals.
New research reveals that the sperm cells of adolescent boys have more than six times the rate of DNA mutations as the equivalent egg cells in adolescent girls, resulting in higher rates of DNA mutation being passed down to children of teenage fathers. The findings suggest that the risk of birth defects is higher in the children of teenage fathers as a consequence.
Females protect offspring from infanticide by forcing males to compete through sperm instead of violence13 Nov 2014
Latest research shows the females of some mammal species will have many mates to ensure unclear paternity, so that males can’t resort to killing their rival’s offspring for fear of killing their own. This forces males to evolve to compete through sperm quantity, leading to ever-larger testicles. Scientists find that as testis size increases, infanticide disappears.
Research for a new book reveals a culturally sanctioned suppression of dialogue around male infertility – despite it being equally as common as female infertility – to the extent that many infertile men receiving treatment still don’t actually consider themselves infertile.
Using high-speed microscopic imaging, Professor Raymond Goldstein's group in the Department of Applied Mathematics and Theoretical Physics has demonstrated how the interactions of microbes such as sperm cells and algae with solid surfaces are considerably more complex than previously thought.