Microneedles attached to micromanipulators are used in the dissection of tetrads, isolation of zygotes from populations of mating haploid cells, and manipulation of individual cells. - [Read Making a Tetrad Dissection Needle Protocol]
Zygotes can be identified by their unique morphology. They can be easily separated away from nonmated cells using a micromanipulator. This method provides an alternative to the selection of diploid cells on a medium that prevents the growth of haploid parent cells. - [Read Picking Zygotes Protocol]