Viaspace Giant King Grass shows high yield at California site. Viaspace Inc. has announced that the first harvest of Giant King Grass in the Imperial Valley of California, was completed on Sept. 2. At the University of California site in Holtville, California, two planting methods were compared.
Identical Twins occur when a single egg is fertilized by a single sperm to form one zygote (monozygotic) but the zygote then divides into two separate embryos. The biological mechanisms that prompt the single fertilized egg to split in two remain a mystery. The two embryos develop into foetuses sharing the same womb.
There are four types of twins: 1  Diochorionic-diamniotic twins either never divided (aka are fraternal twins) or divided within the first four days and have two separate amniotic sacs and placentas. 2  Monochorionic-diamniotic twins share the same placenta, but have two amniotic sacs.