If the two double-mutant recombinants in a tetratype ascus cannot be distinguished. phenotypically from the four single-mutant parental types, progeny-tests or complementation-tests may be. required. The reverse situation may arise, where it is desired to recover a single-mutant component from a double. mutant strain.
For places named New Market, see New Market (disambiguation). Newmarket is a market town in the English county of Suffolk, approximately 65 miles (105 kilometres) north of London. It is generally considered the birthplace and global centre of thoroughbred horse racing and a potential World Heritage Site.
Roosevelt County is a county located in the U.S. state of Montana. As of the 2010 census, the population was 10,425. Its county seat is Wolf Point. Roosevelt County was created by the Montana Legislature in 1919 from Sheridan County. The name honors former president Theodore Roosevelt, who had died shortly before the county was formed.