Animal cells and plant cells can form tissues ... Sex cells are called gametes. These are sperm and eggs (or ova) in animals, and pollen and ova in plants eggs (or ova ) are female gametes ...

The tail enables the sperm to swim. The nerve cell is extended ... They therefore support the plant. Dissolved sugars and amino acids can be transported both up and down the stem.

View Full Profile. Learn about our Editorial Policies. In the flowering plant world, reproduction means an intricate succession of events. It begins when a pollen grain that carries the sperm cells ...

But a technique called surrogate sire technology—in which males are first sterilized and then transplanted with stem cells to produce sperm from genetically desirable donors—may soon join the list, ...

Fathers may carry traces of their childhood trauma in their sperm cells, a new study finds. The new research, published Jan. 3 in the journal Molecular Psychiatry, looked at the "epigenetics" of ...

The chromosomes of sperm cells are tightly packaged into a complex of DNA and protamines. Converting the chromatin from a nucleohistone to a nucleoprotamine structure may serve both biophysical ...

Surprisingly, this occurs right within our bodies. Human sperm cells have unique characteristics, with a peculiar blob-like head and an extraordinarily long tail. Despite their appearance ...

Meiosis, as described above, is the process by which certain sex cells are created. If you're male, your body uses meiosis to create sperm cells; if you're female, it uses meiosis to create egg cells.