The earliest days after fertilization, once a sperm cell meets an egg, are shrouded in scientific mystery. The process of how a humble single cell becomes an organism fascinates scientists across ...

The egg cell travels through the oviduct towards the uterus. If the egg cell does not meet with a sperm cell in the oviduct, the lining of the uterus begins to break down and the cycle repeats.

A sperm cell and an egg cell each contain half the DNA to make a person. Encoded in that DNA are genes – instructions on how to make everything from eyelids to elbows. Some traits, like height ...

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 ...

The egg cell travels through the oviduct towards the uterus. If the egg cell does not meet with a sperm cell in the oviduct, the lining of the uterus begins to break down and the cycle repeats.

They are also referred to as sex cells. Female gametes are called ova or egg cells, and male gametes are called sperm. Gametes are haploid cells, and each cell carries only one copy of each ...

Egg fertilization is often described as an epic swim meet: Millions of sperm swim as fast as they can toward the egg until ...

After ejaculation, the sperm swim through the vagina, into the uterus, and up the fallopian tubes, where they may meet and fertilise an egg (female gamete). "A common concern among patients is ...

Kanazawa University and colleagues have achieved a breakthrough in understanding sperm DNA packaging. Using high-speed atomic ...

Monash researchers have discovered that swimming sperm create swirling fluid ... them an extra boost in the race to the egg. The study, published in Cell Reports Physical Science, reveals that ...

Germ cells and sex cord stromal cells form when a fetus (baby) is developing. A fetus is made from a sperm cell and an egg cell. Germ cell tumors (GCTs) are also known as germ cell cancer. Germ cells ...

His parents enrolled him in a study that was collecting and storing immature testicular tissue, and the sperm-forming stem cells in them ... be used to fertilize an egg in a laboratory.