As viewed from a human perspective, nature has done some ingenious engineering to overcome some of the obstacles it has faced. Take the evolution of sex, for instance. To make the move from asexual to ...

Figure 1: Immunolocalization of meiotic proteins in wheat (W) and wheat–rye hybrids (WR) meiocytes in the presence (+) and absence (−) of the Ph1 locus. Meiocytes of wheat and wheat–rye hybrids were ...

Geneticists have been debating if meiosis requires only external or internal signals. Although earlier work revealed that an external cue from retinoic acid is needed, new research shows that ...

In the process of replicating themselves, cells have another choice: do they want to make an identical copy and be left with two cells? Or do they want to make four “half-copies”, in preparation for ...

All cells arise from other cells through the process of cell division. Meiosis is a specialized form of cell division that produces reproductive cells, such as plant and fungal spores and sperm and ...

Mitosis and meiosis are both processes by which cells reproduce, but there are distinct differences between the two. While new cells are generated during mitosis, meiosis is a special type of cell ...

According to the theory old cells split into new cells and the formation of new cells is known as cell division or cell production. This was firstly observed by Flemming in 1882 but an extensive in ...

More than one-sixth of adults around the world experience infertility in their lifetime. There is a high unmet need not only for increased access to affordable, high-quality fertility care for those ...