In many organisms sex is determined genetically. Often this is accompanied by chromosomal differences between the sexes. Chromosomes, structures made of proteins and coiled DNA, contain all the genetic information of an organism.
What Are Sweetbreads? ccording to the Larousse Gastronomique, sweetbread is the culinary term for the thymus gland (in the throat) and the pancreas (near the stomach) in calves, lambs and pigs. Larousse further states that thymus sweetbreads are elongated and irregular in shape while pancreas sweetbreads are larger and rounded. But sweetbreads are neither sweet, nor are they bread. The word sweetbread was first used in the 16th century, but the reason behind the name is unknown.
Sweetbreads on mushroom (morel) risotto. Sweetbreads or ris are culinary names for the thymus (also called throat, gullet, or neck sweetbread) or the pancreas (also called heart, stomach, or belly sweetbread), especially of calf (ris de veau) and lamb (ris d'agneau), and, less commonly, of beef and pork.he word sweetbread is first attested in the 16th century, but the etymology of the name is unclear.  Sweet  is perhaps used since the thymus is sweet and rich-tasting, as opposed to savory-tasting muscle flesh.