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.
An Overview of What Vegans Eat on a Daily Basis. The phrase, âa vegan diet,â is generally associated with a way of eating that is bland, restrictive, and tasteless. Vegans do not eat meat, cheese, dairy or eggs, but the selection is never-ending and chock-full of delicious choices. It is a major misconception that vegans can only eat salads and tofu.