Roslin Institute campus of the University, but despite this, retained its now world famous name. The Institute won international fame in 1996, when Ian Wilmut, Keith Campbell and their colleagues created Dolly the sheep, the first mammal to be cloned from an adult cell, at the institute. A year later Polly and Molly were cloned, both sheep contained a human gene. Roslin has made many other contributions to animal sciences, especially in the area of livestock improvement and welfare through applications of Quantitative Genetics. In 2007 a Roslin team developed genetically modified chickens capable of laying eggs containing proteins needed to make
Mammal tooth Mammal tooth Teeth are common to most vertebrates, but mammalian teeth are distinctive in having a variety of shapes and functions. This feature first arose among the Therapsida (mammal-like reptiles) during the Permian, and has continued to the present day. All Therapsid groups with the exception of the mammals are now extinct, but each of these groups possessed different tooth patterns, which aids with the classification of fossils. The extant mammalian infraclasses each have a set dental formula; the Eutheria (placental mammals) commonly have three pairs of molars and four premolars per jaw, whereas the Metatheria (marsupials) generally have four