Questions: In Figure 1, horizontal lines in the double helix represent:
Base pairs
Codons
Individual bases
Nothing at all, they just support the metal model designed by Watson and Crick
In Figure 1, horizontal lines in the double helix represent:
Base pairs
Codons
Individual bases
Nothing at all, they just support the metal model designed by Watson and Crick
Solution
The answer is the first one: base pairs.
Explanation for each option:
Base pairs: This is correct. In the double helix structure of DNA, the horizontal lines represent the pairs of nucleotides (adenine-thymine and guanine-cytosine) that form the rungs of the helical ladder.
Codons: This is incorrect. Codons are sequences of three nucleotides that correspond to specific amino acids or stop signals during protein synthesis, not the horizontal lines in the double helix.
Individual bases: This is incorrect. Individual bases are the nucleotides themselves (adenine, thymine, guanine, cytosine), but the horizontal lines in the double helix represent pairs of these bases.
Nothing at all, they just support the metal model designed by Watson and Crick: This is incorrect. The horizontal lines in the double helix model represent the base pairs, which are a fundamental aspect of the DNA structure.
Summary:
The horizontal lines in the double helix represent base pairs.