However, in 2003, Yugoslavia subsequently became the new states of Serbia and Montenegro and in June 2006, Serbia gained independence from Montenegro and was recognized as a sovereign nation by the United Nations and other countries.
Fibrous proteins and globular proteins differ in size, shape, solubility, appearance as well as in function. Fibrous proteins consist of repetition of a single unit to form chains that act as connective tissues and give strength and joint mobility.
The most obvious difference between placentals is the female reproductive tract. In marsupials there are 2 full sets of structures, 2 fallopian tubes, 2 uteruses, 2 cervixes and 2 vaginas., while in placentals, the only parts still separate are the fallopian tubes.