The last common ancestor of modern organisms must have used
A) both D and L amino acids.
B) D amino acids.
C) L amino acids.
D) either D or L amino acids.

Name: The last common ancestor of modern organisms must have used A) both D and L amino acids. B) D amino acids. C) L amino acids. D) either D or L amino acids.
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Question

Quizplus · Accepted Answer

The last common ancestor of modern organisms likely used L amino acids, as this is the form predominantly found in proteins of all known life forms today.

The Last Common Ancestor of Modern Organisms Must Have Used