The only difference between brown and white eggs is the color of the shell, which depends on the breed of hen that lays them.

Last Easter the Dobbs slipped into that universal grand parenting “what-can-we-do-special-for-our-grandkids” mode. Why not ...

Fossils are providing more and more clues about how dinosaurs attracted one another and reproduced, which contributed to ...

While female birds have only one oviduct—thought to be an adaptation related to becoming light enough to fly—the presence of two eggs in the dinosaur suggested the presence of two oviducts ...

Ova—or underdeveloped yolks within a hen’s ovaries—that are not fertilized will grow and make their way down the oviduct until they are laid. These embryo-less eggs still contain many of the same ...

This valuable study reports on the critical role of ANKRD5 (ANKEF1) in sperm motility and male fertility. However, the supporting data remain incomplete. This work will be of interest to biomedical ...

"Another egg drops from the oviduct into the uterus and a shell forms around both eggs, then the egg gets released," she said. Shane said it's "not too dissimilar from a double-yolked egg ...

Figure 1: Transgene expression and phenotype. Figure 2: K14.MYC2 mice exhibit impairment in wound healing. Figure 3: K14.MYC2 primary keratinocytes exhibit a defect in migration. Figure 4: K14 ...

Domestic cats are sterilized via ovariohysterectomy, but this procedure is not feasible for the larger population of free-roaming cats. Here they show that injecting high levels of anti-Müllerian ...