pattern formation
(Science: cell biology) One of the classic problems in developmental biology is the way in which complex patterns are formed from an apparently uniform field of cells.
Various hypotheses have been put forward and there is now evidence for the existence of gradients of diffusible substances (morphogens) specifying the differentiative pathway that should be followed according to the concentration of the morphogen around the cell.
Animals living in aquatic habitats have diversified and evolved through time. They eventually occupy ecological niches a..
In plants, growth occurs in meristems, which are the site of repeated cell division of unspecialized cells. These cells ..
There are more species of insects than any other species combined. This surely illustrates that insects have the selecti..
This tutorial describes the different types and causes of brain damage. Find out how genetics, physical injury, lack of ..
According to Charles Darwin's theory of natural selection, preferable genes are favored by nature in the gene pool, and ..
Plant organs are comprised of tissues working together for a common function. The different types of plant tissues are m..
