Question

many scientific explanations for the origin of dna and life have been proposed over the years. these hypotheses explain how inorganic molecules became organic monomers, such as amino acids, sugars, phosphates and bases. but this still didnt explain where living things came from. if macromolecules were able to form on early earth, this still leaves us with the question of how the polymers would have become self - replicating, a basic criteria for life. there are several ideas but little certainty. some of the common ideas include the rna world hypothesis, the \genes first\ hypothesis, and the \metabolism first hypothesis.\ which of these statements is proposed by the \genes first\ hypothesis? choose all that apply a rna is highly stable b the first life forms were self - replicating nucleic acids, such as rna or dna c rna is able to store and pass on genetic information d rna contains less nitrogen bases than dna and thus, is a simpler molecule e ribosomal rna (rrna) and transfer rna (trna) are the primary molecules responsible for protein synthesis

Explanation:

The "genes first" hypothesis posits that the first life - forms were self - replicating nucleic acids like RNA or DNA as genes are made of nucleic acids and self - replication is a key aspect of life's origin in this hypothesis. RNA can store and pass on genetic information which is also in line with the idea of genes being the starting point. RNA stability is not a central tenet of the "genes first" hypothesis, the comparison of nitrogen bases between RNA and DNA is not relevant to the hypothesis, and the role of rRNA and tRNA in protein synthesis is more about the process of protein production rather than the origin of life as proposed by the "genes first" hypothesis.

Answer:

B. The first life forms were self - replicating nucleic acids, such as RNA or DNA
C. RNA is able to store and pass on genetic information