e "RNA world hypothesis"... O maintains that RNA originally served as the main energy source of cells and gradually evolved to have a genetic function. O speculates there was a time in earth's history when RNA served both as rudimentary genetic material and the primary catalyst of life. Ohypothesizes that RNA viruses were the first life forms and later evolved into DNA based microbes assumes RNA was a key ingredient in the first primitive membranes that formed protobionts. Later, it migrated inside of "proto-cells" and took on a hereditary function. has largely been discredited by most researchers studying the origins of life on earth. It is now widely believed that DNA preceded RNA.

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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The "RNA world hypothesis"...
maintains that RNA originally served as the main energy source of cells and gradually evolved to have a
genetic function.
Ospeculates there was a time in earth's history when RNA served both as rudimentary genetic material and the
primary catalyst of life.
Ohypothesizes that RNA viruses were the first life forms and later evolved into DNA based microbes
assumes RNA was a key ingredient in the first primitive membranes that formed protobionts. Later, it migrated
inside of "proto-cells" and took on a hereditary function.
has largely been discredited by most researchers studying the origins of life on earth. It is now widely believed
that DNA preceded RNA.
Transcribed Image Text:The "RNA world hypothesis"... maintains that RNA originally served as the main energy source of cells and gradually evolved to have a genetic function. Ospeculates there was a time in earth's history when RNA served both as rudimentary genetic material and the primary catalyst of life. Ohypothesizes that RNA viruses were the first life forms and later evolved into DNA based microbes assumes RNA was a key ingredient in the first primitive membranes that formed protobionts. Later, it migrated inside of "proto-cells" and took on a hereditary function. has largely been discredited by most researchers studying the origins of life on earth. It is now widely believed that DNA preceded RNA.
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