What would the complimentary strand for the DNA double helix sequence that follows be and explain your response with detail. 5’-TACGCCT-3

Answer 1

DNA is antiparallel, meaning that the complementary, or bottom, strand is oriented with its 3' OH end to the left and its 5' phosphate end to the right. So it is opposite the top strand. A and T have two hydrogen bonds and pair together, and G and C have three hydrogen bonds and they pair together. So the complementary strand would be:

3' - ATGCGGA - 5'

Hope this helps

Answer 2

I hope this helps, Alana! To clarify a quick point, I mentioned that DNA Polymerase retrieves nucleotides from the cytosol--in eukaryotes, DNA synthesis occurs in the nucleus, so disregard that point. Other than that, this should help you address questions like this in the future!