Prior to the discovery of melatonin [meh-luh-TOH-nin], the pineal gland was thought to be one of these in mammals.
Apomixis makes the stamen this type of structure in the common dandelion. Prior to the discovery of melatonin [meh-luh-TOH-nin], the pineal gland was thought to be one of these in mammals. The mitosomes of Giardia [gee-AR-dee-uh] parasites bear this relationship to mitochondria, and the teeth of whale sharks can also be described by this term. The eyes of cave-dwelling fish and salamanders are often this type of structure, also seen in the pelvises of snakes, the wings of ostriches, and the human appendix. Identify this term for an organ that served a role in an ancestor species but no longer has a function.
Apomixis makes the stamen this type of structure in the common dandelion.
vestigial structures [prompt on non-functioning, non-working, and anything conveying a similar idea]