Animal cells lack the rigid cell walls that characterize plant cells. The bodies of most animals (all except sponges) are made up of cells organized into tissues; each tissue specialized to some degree to perform specific functions. In most, tissues are organized into even more specialized organs. Most animals are capable of complex and relatively rapid movement compared to plants and other organisms. Most reproduce sexually, by means of differentiated eggs and sperm. Most animals are diploid, meaning that the cells of adults contain two copies of the genetic material. The development of most animals is characterized by distinctive stages, including a zygote, formed by the product of the first few division of cells following fertilization; a blastula, which is a hollow ball of cells formed by the developing zygote; and a gastrula, which is formed when the blastula folds in on itself to form a double-walled structure with an opening to the outside, the blastopore. OMICS Group International is one of the leading Open Access Publishers which is publishing 700+ peer-reviewed journals. Each and every article undergoes a peer-review process to assess the quality of the article. Generally, these publications appreciate articles those that are accessible even to those people who are not specialist in the field but are interested in those research topic. These journals are periodical publications that are intended to share the progress of science. OMICS Group International is one of the leading Open Access Publishers which is publishing 700+ peer-reviewed journals.
Last date updated on July, 2014