According to modern biological evidence, modern DNA-based life may have arisen from an earlier
A) RNA world
B) bacterial world
C) protein world
D) extraterrestrial world

Question

Quizplus · Accepted Answer

Modern biological evidence suggests that the earliest forms of life on Earth were likely based on RNA (ribonucleic acid) rather than DNA. This is known as the RNA world hypothesis, which suggests that RNA may have been the first self-replicating molecule that eventually evolved into DNA-based life forms. This hypothesis is supported by experimental studies that have shown that RNA can catalyze many of the chemical reactions needed for life, and that it can also store genetic information like DNA. Therefore, the best choice is A) RNA world.

According to Modern Biological Evidence, Modern DNA-Based Life May Have