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Which of the following descriptions of proteins are true? i. proteins can have different sequences of amino acids. ii. proteins can have different shapes. iii. proteins can have different numbers of amino acids. a. only i and ii are true. b. only ii and iii are true. c. only i and iii are true. d. i and ii and iii are all true. e. none are true statements

Connection compare and contrast genetic engineering to the process of natural selection. select all statements that are true.

Which of these correctly describes the difference between processes that take place in prokaryotic and eukaryotic cells?