A current leading hypothesis about the first system of inheritance in the earliest life-forms involves
A. self-replicating DNA molecules (the DNA world hypothesis).
B. self-replicating RNA molecules aided by ribozymes.
C. proteins that served as templates for RNA molecules, leading to the formation of DNA.
D. self-replicating polypeptides aided by ribosomes.
Answer:B
A current leading hypothesis about the first system of inheritance in the earliest life-forms involves
A. self-replicating DNA molecules (the DNA world hypothesis). B. self-replicating RNA molecules aided by ribozymes. C. proteins that served as templates for RNA molecules, leading to the formation of DNA. D. self-replicating polypeptides aided by ribosomes.