When there are few copies of an allele, the effect of genetic drift is larger, and when there are many copies the effect is smaller. In the early 20th century, vigorous debates occurred over the relative importance of natural selection versus neutral processes, including genetic drift.
In computing and telecommunication, a control character or non-printing character is a code point (a number) in a character set, that does not represent a written symbol. C0 and C1 control codes-Wikipedia. STX-Start of Text-First character of message text, and may be used to terminate the message heading. SOH-Start of Header-First character of a message header. GS-Group Separator-Can be used as delimiters to mark fields of data structures.
These DOHC engines usually have 4 valves. One camshaft for the exhaust valves and the other for the intake valves. SOHC means Single Over Head Cam (Only a single cam rod operates the intake and out take valves). That means that there is only one camshaft per header. Inline engines will contain one camshaft.