AP BIOLOGY

EVOLUTION

THE ORIGIN OF LIFE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Scientist explanations like theories of the origin of life on earth help to explain how the first organism on Ear. came about. Which characteristics below best describes scientific explination?
A
They are based on popular opinion
B
Must be agreed on by all scientists and have at least some supporting evidence
C
Explain why things happen base on the best guess scientist can make
D
Are the ones best supported by all the available data and evidence to help understand how something works
Explanation: 

Detailed explanation-1: -Many scientists favor the RNA world hypothesis, in which RNA, not DNA, was the first genetic molecule of life on Earth. Other ideas include the pre-RNA world hypothesis and the metabolism-first hypothesis. Organic compounds could have been delivered to early Earth by meteorites and other celestial objects.

Detailed explanation-2: -The most accepted theory on the origin of life, is the theory of biochemical evolution.

Detailed explanation-3: -In fact, we may distinguish five theories that Darwin combined: evolution as such, common descent, gradualism, multiplication of species, and natural selection.

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