An intriguing new theory of evolutionary biology says the reason sexual reproduction may be so successful is that it promotes genes that work well in combination with many other genes. This idea of ...

Sperm and egg cells, or gametes, are unusual. Egg cells are some of the largest cell types, and sperm are some of the smallest. In humans, these haploid cells come together to form diploid cells. It's ...

Over at PLoS Biology, biologist Denis Roze has a fascinating article introducing a question that may at first seem obvious, but is in fact one of the enduring mysteries of biology: Why bother to have ...

Two novel hypotheses have been proposed that address the 'two-fold cost of sex': one of the biggest enigmas in the evolution of sexual reproduction. Two novel hypotheses have been proposed that ...

Figure 1: Types of directional epistasis for deleterious mutations. The mechanistic underpinnings of this model allow a priori predictions about the evolution of genetic robustness. In this model, the ...

A variety of species across the animal kingdom can reproduce both sexually and asexually, including some types of starfish, water fleas, hammerhead sharks and Komodo dragons. Spanning evolutionary ...

Two novel hypotheses have been proposed that address the “two-fold cost of sex”: one of the biggest enigmas in the evolution of sexual reproduction. The evolution of sexual reproduction in living ...