Mutant 1: Ultraviolet light can cause mutations by changing CC to TT in DNA. Find the CC in the DNA (Sense) sequence (nucleotides 04 and 05).
Change the CC to TT in the DNA (Sense) sequence.
In Table B1b, enter the resulting DNA, RNA, and protein sequences for this mutant.
Indicate any changes by either changing the color of the letters or by color highlighting.

the answer to your question is:

c. complementary base-pairing

primary succession occurs in essentially lifeless areas regions in which the soil is incapable of sustaining life as a result of such factors as lava flows, newly formed sand dunes, or rocks left from a retreating glacier. secondary succession occurs

burning fossil fouls really decrease the carbon in the atmosphere so b