The external layer of the human skin is called the epidermis and it replaces itself approximately every 27 days through shedding, which is known as exfoliation. Only this outer or surface layer of skin is replaced during the exfoliation process.
Gregor Mendel, the Moravian Augustinian monk who founded the modern science of genetics. Mendelian inheritance is a type of biological inheritance that follows the laws originally proposed by Gregor Mendel in 1865 and 1866 and re-discovered in 1900. These laws were initially very controversial.
And stem cells cloned from someone with a disease could be grown in culture and studied to help researchers understand the disease and develop treatments. In 2013, scientists at Oregon Health and Science University were the first to use cloning techniques to successfully create human embryonicstem cells. The donor DNA came from an 8-month-old with a rare genetic disease. Find out more about Stem Cells.