(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 ...

The protein RGS2 can delay an egg’s development into an embryo in order to allow time for sperm to arrive and merge with the egg in a healthy fertilization process. The embryo cannot survive without ...

In vitro fertilization (IVF) process involves fertilization of egg cells by sperm outside the woman’s body and then implanting it in the uterus. It is a type of assisted reproductive technology (ART) ...

Back in the day, IVF was spoken about in hushed tones, in hurried gossips, in embarrassed voices. Today things are different. IVF is a common term. People know that it is a complex procedure ...

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 ...