Meiosis is the two-step series of cell divisions that make sexual reproduction and genetic diversity possible. Researchers have now dived into the process of meiosis in specific plant species and ...

Scientists have characterized a mechanism that allows for asymmetrical cell division during meiosis in oocytes. By tracking chromosome movement in live mouse oocytes, they have discovered that ...

Chromosome aneuploidy is a major cause of pregnancy loss, abnormal pregnancy and live births following both natural conception and in vitro fertilisation (IVF) and increases exponentially with ...

Albert Cairó, Karel Riha and their colleagues have discovered a previously unknown mechanism that is responsible for reprogramming gene expression during the transition when one cell differentiates ...

Researchers have uncovered how successful chromosome segregation during sexual reproduction is achieved in plants. The ...

KANSAS CITY, MO -- Most cells rely on structural tethers to position chromosomes in preparation for cell division. Not so oocytes. Instead, a powerful intracellular stream pushes chromosomes far-off ...

The spindle apparatus of Coprinus micaceus begins to develop from the diglobular polar body outside the nucleus. During both meiotic divisions it operates inside the nuclear envelope and consists of ...

The hallmark of successful human reproduction is the fusion between a haploid spermatozoon and a metaphase II oocyte. The generation of such an oocyte involves a series of steps whereby ...

It can be hard to dispute the common adage 'survival of the fittest'. After all, "most of the genes in the genome are there because they're doing something good," says Sarah Zanders, PhD, assistant ...

This is a preview. Log in through your library . Abstract Irradiation of the mitotic spindle in living Nephrotoma suturalis (Loew) spermatocytes with an ultraviolet microbeam of controlled dose ...