The substitution, addition, or removal of a single nucleotide in dna is called a(n) mutation.

a)interstitialb)normalc)pointd)r eference

C (Point mutation)

Explanation:

Mutation is any change, no matter the degree or size, that occurs in a nucleotide sequence of a DNA. It occurs naturally due to mistakes during replication or can be induced by mutagens (mutation-causing components). A mutation is regarded to be POINT MUTATION, if it affects only a single nucleotide in the sequence.

Point mutation occurs in scenarios whereby a single base pair/nucleotide is substituted/replaced, deleted/removed from the sequence, or inserted/added. This sorts of mutation can yield beneficial or harmful effect in the organisms they occur.

you must remain stopped until the stop signal is retracted and the red lights are turned off. approaching traffic in the opposite roadway of a divided highway shall not be required to stop, even if the school bus has the stop-arm extended and the alternately flashing warning signal lamps on.

explanation:

okay now i don't know this but for the pints nothing else to say bye