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Which of the following facts suggests that early life used a genetic code in which only two base words coded for amino acids rather than the three base words used today?Which of the following facts suggests that early life used a genetic code in which only two-base "words" coded for amino acids, rather than the three-base words used today? Most of the 64 possible three-base words code for amino acids based only on their first two bases.
Which of the following is biochemical evidence of common descent?Which of the following is biochemical evidence that supports the theory of common descent? Use of the same DNA triplet code and the same 20 amino acids in the protein of all organisms. Which of the following is an example of a vestigial structure?
What are the universal features of all living cells?Summary. All Cells Store Their Hereditary Information in the Same Linear Chemical Code (DNA). All Cells Replicate Their Hereditary Information by Templated Polymerization.. All Cells Transcribe Portions of Their Hereditary Information into the Same Intermediary Form (RNA). All Cells Use Proteins as Catalysts.. What is biochemistry life?Life comprises individuals, living beings, assignable to groups (taxa). Each individual is composed of one or more minimal living units, called cells, and is capable of transformation of carbon-based and other compounds (metabolism), growth, and participation in reproductive acts.
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The fact that all cells used in life on Earth are based on the same biochemistry suggests that
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