Each sperm cell, or spermatozoon, is small and motile. The spermatozoon has a flagellum, which is a tail-shaped structure that allows the cell to propel and move. In contrast, each egg cell ...

If you're male, your body uses meiosis to create sperm cells; if you're female, it uses meiosis to create egg cells. Others cells in your body contain 46 chromosomes: 23 from your father and 23 ...

Scientists worked out the structure of DNA in the 1950s ... 46 chromosomes in total. Human sex cells or gametes (egg and sperm) only contain 23 chromosomes in total. Each chromosome contains ...

This is according to a new study led by researchers at Karolinska Institutet and published in the journal Cell ... the 3D structure of egg coat proteins. The interaction between sperm and eggs ...

The middle piece is packed with mitochondria to release energy needed to swim and fertilise the egg. The tail enables the sperm to swim. The nerve cell is extended, so that nerves can run to and ...

The chromosomes of sperm cells are tightly packaged ... across the zona pellucida surrounding the egg. It may also be that the nucleoprotamine structure protects the genetic material in the ...

Within minutes of fertilization, the egg ... structure. Yet the fruit fly egg, as the team showed, manages to destroy even this large formation. Ben-Hur and colleagues found that no sooner does ...