When a woman becomes pregnant, the outcome of that pregnancy depends on many things — including a crucial event that happened while she was still growing inside her own mother’s womb.

When a sperm meets an egg, a lot has to go right for an embryo to develop into a complete organism. One critical step of ...

Bacteria are constantly moving with the help of motility organs called flagella or pili to colonize new niches. Also, ...

For decades, scientists have known that bacteria can exchange genetic material, in a process called horizontal gene transfer.

These chains come in a wide range of lengths. In humans a typical protein is about 400 amino acids long; some are a lot longer. Molecules of RNA, one of the two nucleic acids, can reach up to 100,000 ...