The cross-shaped exchange configuration between non sister chromatids of homologous chromosomes that is visible during prophase I of meiosis. [tvmouse.ucdavis.edu/mousebiology/...] chiasma The site where the exchange of chromosome segments between homologous chromosomes takes place (crossing-over) (pl.: chiasmata). PICTURE. chitin A polysaccharide contained in fungi; also forms part of the hard outer covering of insects.
Becoming a vegan requires you to make drastic changes to your diet. You have to eliminate anything of animal origin, which includes meat, seafood, cheese, milk, eggs, fish and gelatin. Vegan diets are naturally low in saturated and trans fats, reducing your risk of developing heart disease and related complications.
A vegan diet does not permit any foods derived from animal sources, such as meat, dairy products and eggs. Some vegans also avoid honey and gelatin, as well as products produced using animal byproducts, such as commercially produced wines and refined sugar. Vegans represent between 0.3 and 1 percent of the U.S. population, according to the Vegetarian Resource Group. A vegan diet eliminates the saturated fats and chemicals found in animal products; however, vegans may need to take certain vitamins to avoid deficiencies.