(a) A pollen grain containing the two sperm cells. It produces a pollen tube, which arrives at the ovule. After the arrival, one of the synergid cells degenerates and the pollen tube bursts to ...

Structure of a flower, consisting of a pistil (female part) in the center and stamen (male part) on each side. The pistil has ovules containing egg cells, and the stamen consists of pollen containing ...

A microscopic structure in mammalian egg cells called a meiotic spindle has one crucial job—and during egg maturation, it has only a few hours to do it properly. What happens in those few hours has ...

Who hasn't seen it before: the view through the microscope in which a sperm penetrates an egg cell and fertilises it. This fundamental step in procreation happens dynamically and seemingly without ...

Advances in assisted reproduction are no longer limited to simple ovarian stimulation. An international team has just reached ...

During fertilization, the sperm and egg cling to each other with unusual strength. Researchers at ETH Zurich and the University of Basel have now deciphered how this strong bond works. According to a ...

Using a newly developed method researchers at the Institute of Molecular Biotechnology of the Austrian Academy of Sciences (IMBA) have been able to shed light on the complexity of genome ...

Infertility affects around 15% of couples worldwide, according to the World Health Organization (WHO). Some cases of infertility are associated with mutations in the genes that are responsible for egg ...