19. Explain the following observation made by Gregory Mendel in his experiments, A cross between a pure breed tall plant and a pure breed dwarf plant had all the first filial generation being tall.​

do yall know the answer?

the three components of a nucleotide are the nitrogenous base, the phosphate group and the five-carbon sugar.

hydrogen is a compound or a single element and a element is a pure substence that cannot be separated into simpler subtances

clorine is a compound its a chemical substance that forms when two or more different elements combine

so both hydrogen and clorine are compounds