Question

Miller was the first to show that

A. the earliest forms of life had an RNA genome.
B. eukaryotic life evolved from early prokaryotes.
C. amino acids and other organic molecules could have formed under conditions thought to resemble those of early Earth.
D. the earliest forms of life were photosynthetic.

Answer 1

Miller was the first to show that the earliest forms of life had an RNA genome. The correct option is A.

Step-by-step explanation:

Miller was the first to show that A. the earliest forms of life had an RNA genome.

Scientists have tried to duplicate in their laboratories the chemical pathways that led to life on Earth. In a series of experiments known as the Miller-Urey experiments, biochemists have simulated conditions on early Earth and have been able to produce fundamental building blocks of life, including those that form proteins and nucleic acids.

The RNA world hypothesis suggests that early life was based solely on RNA and that DNA and proteins evolved later, solving the chicken-and-egg problem of which molecule came first.