2) Which of the following tools of DNA technology is correctly paired with its use? A) electrophoresis—separation of DNA fragments B) DNA polymerase—polymerase chain reaction to digest sections of DNA C) reverse transcriptase—production of cDNA from rRNA D) DNA ligase—cutting DNA, creating sticky ends of restriction fragments

D) DNA ligase—cutting DNA, creating sticky ends of restriction fragments

Explanation:

DNA ligase is an enzyme that connects the two separated DNA strands

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in 1859, charles darwin set out his theory of evolution by natural selection as an explanation for adaptation and speciation. he defined natural selection as the "principle by which each slight variation [of a trait], if useful, is preserved".