Which statement is true about dna?
dna is a single-stranded molecule.
both of the original dna strands act as templates during replication.
only one of the original dna strands acts as a template during replication.
dna replication takes place in the cytosol of cells.

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.