This becomes implanted in the wall of the uterus . Learn embryo biology with free interactive flashcards. A zygote is the simplest form of life, so once a zygote is formed, it proceeds to split and divide into new cells that organize and form more complex structures. The developing embryo After fertilisation, the newly-formed zygote divides repeatedly to form a ball of cells called an embryo . After that the unborn baby is usually referred to as the fetus. Embryo m [von *embryo- ], Keim, Keimling, 1) Botanik: der bei Moosen, Farnpflanzen und Samenpflanzen (Embryophyta) aus der befruchteten oder… Embryonalentwicklung [von *embryo-], Keimentwicklung, Keimesentwicklung, Embryogenese, Embryogenie, allgemeindie erste Phase in der Individualentwicklung (Entwicklung) eines Lebewesens. Embryology (from Greek ἔμβρυον, embryon, "the unborn, embryo"; and -λογία, -logia) is the branch of biology that studies the prenatal development of gametes (sex cells), fertilization, and development of embryos and fetuses.Additionally, embryology encompasses the study of congenital disorders that occur before birth, known as teratology. To achieve this, the Biological Definition of Embryo Working Party was established, In humans this is defined as the developing organism from the fourth day after fertilization to the end of the eighth week. Embryo Definition An embryo refers to the early developmental stage of eukaryotic organisms following the fertilization of an egg (derived from a female) by sperm (derived from a male) as a method of sexual reproduction.. Embryonic stem cells (ES cells) are pluripotent stem cells derived from the inner cell mass of a blastocyst, an early-stage preimplantation embryo. Committee would prepare advice on the scientific definition of ‘human embryo’ to inform Council and the review of Australia’s Research Involving Human Embryos Act 2002 and Prohibition of Human Cloning Act 2002. embryo [em´bre-o] a new organism in the earliest stage of development. This undifferentiated mass of cell is formed by certain regulator called as plant growth regulators; they can be inducted into the tissue culture medium for the production of callus and which ultimately gets changed in such a way that it induces embryo to produce callus. 1) Botanik: die Entwicklung eines jungen Organismus aus der befruchteten (Befruchtung, Abb.) In somatic embryogenesis, the formation of callus occurs by culturing the cells which are taken from the source tissue. Around 30 hours after the zygote is formed, the process of mitosis (cell division) begins. An embryo is an early stage of development for an unborn baby. Embryology definition is - a branch of biology dealing with embryos and their development. Choose from 500 different sets of embryo biology flashcards on Quizlet. adj., adj em´bryonal, embryon´ic.