It became apparent to Watson and Crick after completion of their model that the DNA molecule could carry a vast amount of hereditary information. Which of the following characteristics of DNA is responsible for this?A) sequence of basesB) phosphate-sugar backbones C) complementary pairing of bases D) side groups of nitrogenous bases
The correct answer is A) sequence of bases
The correct answer is A) sequence of bases.
The sequence of bases in DNA is responsible for carrying a vast amount of hereditary information. DNA consists of a long chain of nucleotides, and each nucleotide contains a nitrogenous base (adenine, thymine, cytosine, or guanine), a sugar molecule, and a phosphate group. The DNA molecule contains two complementary strands that are held together by hydrogen bonds between the nitrogenous bases. The sequence of these bases along the DNA molecule forms the genetic code.
The order and arrangement of the bases in the DNA molecule determine the information encoded within it. The sequence of bases acts as a code that carries instructions for the synthesis of proteins and other molecules essential for the functioning and development of organisms. By coding for specific amino acids, the sequence of bases ultimately determines the structure and function of proteins, which are the workhorses of cells and play critical roles in various biological processes.
Therefore, the sequence of bases in DNA is responsible for carrying the hereditary information that is passed from one generation to the next and is the key factor that allows DNA to store a vast amount of genetic information.
More Answers:
Why DNA Replication Occurs in the 5′ to 3′ Direction: The Role of DNA Polymerase and Molecular StructureUnderstanding Antiparallel DNA Strands: Importance of Opposing Directions in DNA Structure
Understanding DNA Base Pairing: Exploring the Correct Combination of Bases