Zoology - Molecular Basis of Inheritance Question with Solution | TestHub
In the following statements, one word per statement is underlined. This word can be changed to obtain the correct statement. In which one it should not be changed?
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Answer:
Solution:
In the living world, plant viruses and some animal viruses have RNA as the genetic material. Thus, in the living world,most organisms have DNA as the genetic material which can be transmitted from one generation to another. Even though RNA is single stranded, purine:pyrimidine ratio in ribose nucleic acid cansometimes be equal to 1. The 5' end of the DNA strand has a free phosphate group, and the 3' end of the DNA strand has a free -OH group. They do not form phosphodiester bond. Thus, the 3rd carbon atom and the 5th carbon atom ofsomenucleotides in DNA are involved in the formation of phosphodiester bond. Thymine (monocyclic nitrogen base: pyrimidine) always forms two weak hydrogen bonds with adenine (dicyclic nitrogen base: purine) and cytosine (monocyclic nitrogen base: pyrimidine) always forms three weak hydrogen bonds with guanine (dicyclic nitrogen base: purine) in B-DNA.
