Answer:
Nucleotides are the subunits of DNA. The four nucleotides are adenine, cytosine, guanine and thymine. Each of the four bases has three components, a phosphate group, a deoxyribose sugar and a nitrogen-containing base.
Natural selection is one of the leading theories in the Theory of Evolution, because it’s supported by evidence from a variety of scientific disciplines, including paleontology, geology, genetics and developmental biology.
Incomplete dominance produces a new heterozygous phenotype such as the purple color in this example