Answer:
substitution is the Answer
Answer and Explanation:
We need to create a nucleotide sequence, but first what are DNA nucleotides? They are the monomers of the entire nucleic acid strand of DNA.
DNA nucleotides have 4 bases: adenine (A), thymine (T), guanine (G), and cytosine (C). When pairing bases, A and T always go together and G and C always go together. (An interesting trick to remember this is Apple in the Tree and Car in the Garage.)
To create our own, we can draw up any combination of A's, T's, C's, and G's. I'm just going to arbitrarily write the following:
A A G C T T C G A T C G A C C
We need to pair these up by replicating it (remember A with T and G with C). The new strand will become:
T T C G A A G C T A G C T G G
Finally, we need to transcribe this back into the original format because replication is creating the same copy of something:
A A G C T T C G A T C G A C C
Answer:
algal growth due to eutrophication
Explaination:
Eutrophication is where these nutrient rich compounds mix with nearby water sources and promote the growth of large amounts of algae. Algae go through respiration and take up the dissolved O2 in water which causes these areas to experience low O2 levels. Everything needs O2 to survive thus nearby organisms and plants die out creating dead zones.
