Yolk in the eggs provides the embryos with the necessary nutrition until they’re ready to hatch. They take 2 to 7 days to hatch, depending on the temperature of the water. Warmer water will speed up ...

The embryos then develop externally ... This huge range is due to the differences between various fish species. Aquarium fish like goldfish or guppies are at the lower end of the spectrum. However, on ...

cases and I.V.F. disputes, the frozen embryos vials like these will hold are increasingly caught The Embryo Question is a three-part series about the cluster of cells at the crossroads of science ...

Abstract The number of antral follicles is considered an important fertility trait because animals with a high follicle count (HFC) produce more oocytes and embryos per cycle. Identification of these ...