Freebase(0.00 / 0 votes)Rate this definition: Bollard. A bollard is a short vertical post. Originally it meant a post used on a ship or a quay, principally for mooring. The word now also describes a variety of structures to control or direct road traffic, such as posts arranged in a line to obstruct the passage of motor vehicles.
Which of the following events occurs directly after a DNA molecule is unzipped? A. Mismatched nucleotide bases are identified and replaced. B. Free-floating nucleotides pair up with exposed bases.hich of the following events occurs directly after a DNA molecule is unzipped? A. Mismatched nucleotide bases are identified and replaced. B. Free-floating nucleotides pair up with exposed bases.
Unzip DNA. Help Window : The first step of replication is unzipping the DNA molecule. This will divide the molecule lengthwise. Select Unzip to divide the molecule. Description: Selecting the Unzip button causes the DNA molecule to split lengthwise.What Happened Window: In a real cell, the molecule unwinds from spools made of protein, then untwists. (Here the molecule is already unwound and untwisted.) The DNA now resembles a ladder.elp Window : The first step of replication is unzipping the DNA molecule. This will divide the molecule lengthwise. Select Unzip to divide the molecule. Description: Selecting the Unzip button causes the DNA molecule to split lengthwise.