BIOLOGY
NUCLEIC ACIDS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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DNA has a helical structure
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The amounts of A and T are equal and the amounts of C and G are equal
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DNA strands are antiparallel to each other
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DNA is a double helix
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Detailed explanation-1: -Watson and Crick were not the discoverers of DNA, but rather the first scientists to formulate an accurate description of this molecule’s complex, double-helical structure.
Detailed explanation-2: -Created by Rosalind Franklin using a technique called X-ray crystallography, it revealed the helical shape of the DNA molecule. Watson and Crick realized that DNA was made up of two chains of nucleotide pairs that encode the genetic information for all living things.
Detailed explanation-3: -Franklin’s images allowed James Watson and Francis Crick to create their famous two-strand, or double-helix, model.
Detailed explanation-4: -The molecule now known as DNA was first identified in the 1860s by a Swiss chemist called Johann Friedrich Miescher. Johann set out to research the key components of white blood cells?, part of our body’s immune system. The main source of these cells? was pus-coated bandages collected from a nearby medical clinic.