Which if the following events does not occur during dna replication?
a. leading strand is synthesized
b. double helix unwinds
c. lagging strand is synthesized
d. all of the above occur during dna replication

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answer: ice crystals in air

the water from the water body or another source of water gets evaporated as water vapor as an effect of heat on water. these water vapor rises in the upper layers of the earth atmosphere under high atmospheric pressure. the atmospheric pressure of these water molecules starts to decrease due to the effect of cold air. the invisible water vapor condenses into visible water droplets and ice crystals.these ice crystals and water droplets being less denser than the surrounding air floats on air as clouds.

d. groundwater flows through the subsoil and deposits minerals.

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