The first step in the process of generating embryonic stem cells is to remove the nucleus from an unfertilized egg cell (A). Because the egg cell is only 100 micrometers, or one-tenth of a ...

Embryos start out with a single cell that eventually replicates into ... from a glowing jellyfish and inserted it into the unfertilized eggs of house cats. It was a neat trick, but they had ...

Two recent studies in Drosophila demonstrate that overexpression of proteins required for centriole duplication can not only induce centriole over-duplication in cells containing centrioles ...

Stick insects have evolved parthenogenesis, when embryos spontaneously develop from unfertilized egg cells, multiple times despite the potential genomic pitfalls of asexual reproduction, including the ...

The asexual oribatid mites produce their female offspring from unfertilized eggs without males ... Some of these genes seem to help the mite to digest cell walls, thus expanding its food spectrum ...