Simple,
DNA: Deoxyribonucleic Acid
RNA: Ribonucleic Acid
Answer:
The organism's genotype encodes their phenotype because the <u>genotype</u> corresponds to the characteristic that is determined by genes —formed by fragments of <u>DNA</u>— which are transcribed into <u>mRNA</u> to be translated into amino acid sequences in the synthesis of <u>proteins</u>, determining the morphological and functional characteristics of an organism, that is, its phenotype.
Explanation:
<u>Genotype</u> corresponds to the genetic information contained in the <u>DNA</u>, according to the sequence of nucleotides in its molecular structure. This genotype includes characteristics or polymorphisms that define the appearance and function of living beings.
Each DNA molecule constitutes a chromosome, formed by genes —DNA fragments— each of which determines specific characteristics.
When DNA is transcribed into <u>mRNA</u>, information is being sent that is necessary for the incorporation of amino acids into a <u>protein</u> that is being synthesized. The proteins, in turn, determine morphological and functional characteristics that constitute the <u>phenotype</u> of an individual.
I think the answer is B, because only plant cells contain a cell wall, while the other answers contain an organelle that can be found in multiple cell types.
One of the differences is
dna is double stranded
rna is single stranded