EGL USA is one of the largest and oldest independent gemological institutions focusing on gemstone certification and research. Originally part of an international network founded in Europe in 1974, EGL USA opened its first U.S. lab in the heart of New York's international diamond and jewelry district in 1977.
the fusion of the nucleus of a haploid sperm cell and the nucleus of a haploid egg cell, forming a diploid zygote zygote diploid cell formed when the nucleus of a haploid sperm cell fuses with the nucleus of a haploid egg cell tetrad group of four chromatids formed during prophase I of meiosis by the two sister chromatids in each of the two homologous chromosomes
The fusion of two haploid gametes to form a new diploid cell is called fertilization. Self-fertilization in plants, the fusion of two gametes from the same individual to f â¦ orm a diploid offspring. The process of fusion of two sperm with cells of the megagametophyte which produces a zygote and endosperm is called?