B, because it's not an advantage for something to be expensive and time consuming
DNA stands for deoxyribonucleic acid. RNA stands for ribonucleic acid. Both RNA and DNA contain Adenine, Cytosine, and Guanine. However, DNA's nitrogenous base is Thymine while RNA's nitrogenous base is Uracil.
DNA basically contains your genes. Basically, everything about you is from your DNA.
In modern terminology, mendal's heredity "factors" are called
phenotype
