<h2>Answer:</h2>
As in a given cross two genes control the height and flower color. Tall height (T) is dominant over the short height (t) and yellow flowers (Y) are dominant over the white flower (y).
When the tall yellow flowered mated with short white flowers, the genotype of the plants can be;
TTYY × ttyy or It can be TtYy × ttyy or TTYy × ttyy or TtYY × ttyy
You might put harmful toxins in the beach or into the ocean which would kill wildlife
I'm not sure if I will answer the question you asked, as I many have interpreted it incorrectly. In natural selection, there must be variance in the gene pool, the total frequency of alleles in a population. Now, one of the organisms may have a gene that somehow helps them survive from the selective force much better compared to the others. If this does happen, over time the gene pool will narrow down to become just the genes of that organism that survived better in the first place because the rest would be taken care of by the selective force. So, the alleles and trait come from the first organisms that had the advantage over the others of its species.
If the original strand is TACGGTACCGGA, the complementary strains is ATGCCATGGCCT