What is an embryo?
embryo is an organism in the early stages of development that cannot survive itself. The exact IT definition varies; In humans, for example, fertilized eggs may be considered an embryo until the eighth week of pregnancy, when it is called the fetus. Embryos in animals usually indicate any preliminary phase of development, including embinals in womb or eggs. Embryos of plants can take a number of different forms, even if they are commonly closed to seeds.
Formation
The term "embryo" is used only to indicate "eukaryot" or multicellular organisms. Usually people use this term specifically to refer to diploid eukaryotes that have a complete set of genetic material from two donors. This genetic material takes the form of haploid sperm and eggs; The haploid cell contains only half a set of chromosomes, which means that it cannot evolve into anything unless combined with another .. When eggs and sperm meet, they form a "zygot". Zygota is the only diploid cell created by the merger of two haploid cells. AfterThe zygote fertilization begins to divide and lay the foundations for a mature organism that is eventually born, hatched or matures. When this division begins, Zygoty turns into embryos.
Human development
The state of embryos in humans is quite complex. In conception, human eggs and sperm become a zygot that begins to divide and become an embryo. There are a large number of debates about the definition of human embryos in terms of “life”. This debate has led to a conflict in many parts of the world, especially when it comes to ending pregnancy. As the human embryo ripens, it begins to turn into a recognizable form where people call it a fetus.
Development in animals
embryos cannot survive addiction to the lack of tissue, body structure and organs, needed to do so. The Embrya parent must feed it and be careful until they reach the viability. In mammals, this is achieved by incubation inside the body and nourishing nutrients from parents. Animals with an egg layer provide embryo with a rich layer of nutrients enclosed in a hard shell that protects them until it is ready for birth.
plant embryos
The development of embryos in plants depends on the way in which different species are replicated. Those used by seeds include small structures that turn into leaves, roots and stems that form the embryos of these plants. Other species produce embryos as small plants that grow along a larger plant than separately separated to continue growth.