Chiasma (genetics) In genetics, a chiasma (pl. chiasmata) is the point of contact, the physical link, between two (non-sister) chromatids belonging to homologous chromosomes. At a given chiasma, an exchange of genetic material can occur between both chromatids, what is called a chromosomal crossover, but this is much more frequent during meiosis than mitosis. In meiosis, absence of a chiasma usually result in improper chromosomal segregation and aneuploidy.
A cancer prevention diet is one that is high in fiber, low in fat (especially animal fat), and includes generous portions of fruits and vegetables. It also minimizes or excludes alcohol. The best diets are pure vegetarian diets.
What Does a Vegan Diet Consist Of. Following a vegetarian or vegan diet is one good way of meeting all the nutritional needs of the body and staying healthy. A vegan diet may be chosen for a number of reasons.hat Does a Vegan Diet Consist Of. Following a vegetarian or vegan diet is one good way of meeting all the nutritional needs of the body and staying healthy. A vegan diet may be chosen for a number of reasons.