Science / Biology / Fertilization: The fusion of two gametes (sperm and ovum) to produce a zygote that develops into a new individual with a genetic heritage derived from both parents. Strictly speaking, fertilization can be divided into the fusion of the cells (plasmogamy) and the fusion of nuclei (karyogamy).

Double Fertilization

Science / Biology / Double Fertilization: A characteristic of angiosperms in which a pollen tube carries two sperm cells to the female gametophyte in the ovule. One sperm cell fuses with the egg cell and gives rise to a diploid embryo The oth MORE


Science / Genetics / Pronucleus: The nucleus of a sperm or egg prior to fertilization. MORE

Fraternal Twin

Science / Genetics / Fraternal Twin: Siblings born at the same time as the result of fertilization of two ova by two sperm. They share the same genetic relationship to each other as any other siblings. MORE


Science / Genetics / Gamete: An haploid cell.gel electrophoresis the process by which nucleic acids (dna or rna) or proteins are separated by size according to movement of the charged molecules in an electrical field. MORE


Science / Marine Biology / Zygote: A fertilized egg. Or the diploid cell that results from the joining of two haploid gametes (sperm and egg) during sexual reproduction, that will cleave to form an embryo. See also fertilization, gamet MORE

Assisted Reproductive Technologies (ART)

Life Style / Adoption / Assisted Reproductive Technologies (ART): Medical technologies that assist in the impregnation of a female. Technologies include oocyte (or egg) donation, embryo donation, in vitro fertilization, artificial insemination and sperm donation. Di MORE