Answer:
DNA and sugar and phosphate
Answer:
C) The amount of A is always equivalent to T, and C to G
Explanation:
Chargaff's rule was given by the Austrian chemist, Erwin Chargaff in late 1940s. It explains the composition of the four bases i.e. Adenine(A), Guanine(G), Thymine(T) and Cytosine(C) in a DNA molecule. According to it, purine and pyrimidine bases are always found in 1:1 ratio in a DNA molecule. A and G are purine and T and C are pyrimidine bases and a purine always forms a pair with pyrimidine base hence the amount of A will always be equal to T and amount of G will always be equal to C. This rule forms the basis for the Watson and Crick pairs in DNA double helix model.
Phytoplankton can<span> be thought of as the plants of the </span>plankton<span> world. Since they photosynthesise, they </span>play<span> a big </span>role<span> in the</span>oxygen cycle<span>. ... According to National Geographic, around half of the world's </span>oxygen<span> is produced by</span>phytoplankton<span> through the process of photosynthesis</span>
