Experimental studies reveal that double-stranded DNA can exist in three different helical forms known as A, B, and Z DNA. Why do
molecular biologists primarily focus on B DNA? B DNA is the only one of the three forms that is a right-handed helix. B DNA was discovered first, and has been studied longer than the other two forms. The structure of the B DNA is least affected by interactions with other molecules. B DNA is the simplest of the three structures, and the easiest to model mathematically. B DNA is a good approximation of the structure of DNA in cells.
Explanation: B DNA is a good approximation of the structure of DNA found in cells i.e. in both plant and animal cells, the most common structure of DNA observed is the B DNA.
Biology is the natural science that studies life and living organisms, including their physical structure, chemical processes, molecular interactions, physiological mechanisms, development and evolution.
A full understanding of the physical processes which lead to different types of auroras is still incomplete, but the basic cause involves the interaction of the solar wind with the Earth’s magnetosphere. The varying intensity of the solar wind produces effects of different magnitudes, but includes one or more of the following physical scenarios. so the answer is A
