You are using a dideoxy sequencing method to sequence a DNA fragment. A sequence gel gives the following data. The correct sequence of this DNA fragment is . The reagents in the reaction ddA are dNTP, ddATP, DNA template, primer, and DNA polymerase. The reagents in the reaction ddG are dNTP, ddGTP, DNA template, primer, and DNA polymerase, and so on. The nucleotide being synthesized second during the DNA synthesis is .

When does a spring tide occur? question 9 options: they occur when the sun, moon, and earth are aligned. in spite of their name, these tides occur twice a year in the spring and fall. they occur on the date of the vernal equinox each year, no matter what stage the moon is in. this is why they are called spring tides. they occur when the sun, moon, and earth are at 45-degree angles from each other. this happens once every spring. they occur when the sun, moon, and earth are aligned. in spite of their name, these tides occur all year long.