Final answer:
The claim that human DNA is described as "left-handed" is false; human DNA is indeed a right-handed double helix commonly in the B form. The B-Form DNA's right-handed spiral is the predominant structure in cells, and bases pair specifically (A with T, C with G). Rosalind Franklin and R.G. Gosling's work helped demonstrate DNA's helical nature.
Step-by-step explanation:
The statement that DNA found in the human body is most commonly in B Form and is described as "left-handed" is false. DNA is made of two helical chains coiled around the same axis to form a right-handed double helix. The B-Form DNA is the most prevalent form of DNA in cells and is characterized by this right-handed spiral structure.
There are different structural forms of DNA - A, B, Z, and H - with the B form being predominant in physiological conditions. DNA's structure allows it to store and transfer genetic information, organized into 46 chromosomes in humans. Each strand of DNA is composed of the bases Adenine (A), Thymine (T), Guanine (G), and Cytosine (C). These bases pair up in a specific manner: A with T, and C with G, which is crucial for the stability of the DNA double helix structure.
The work of Rosalind Franklin and R.G. Gosling was significant in establishing the helical nature of DNA, a discovery crucial to understanding how DNA functions in genetic inheritance.