A new study published in Science and led by Monash University biologists reveals that the energy cost of reproduction is far greater than previously believed. The research, led by Dr. Samuel C Ginther ...

Some female birds, reptiles and other animals can make a baby on their own. But for mammals like us, eggs and sperm need each other. Parthenogenesis could be the future for this California condor ...

Most male yellow crazy ants carry two separate sets of DNA, resulting from sperm and egg cells that don’t mix their genetic material after fertilisation. This means the males are chimeras – ...