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.
These vegan-like diets eliminate all animal products, including meat, poultry, fish, eggs, dairy and honey. Everything you eat â including whole grains, fruits, vegetables, legumes, nuts and seeds â is derived from plants. Research reflects that following a plant-based diet has health benefits, if you do it correctly. A plant-based diet is also more likely to result in weight loss than a vegan diet.