When a codon that codes for an amino acid is changed to a codon that codes for a different amino acid, that is a
1.nonsense mutation.
2.silent mutation.
3.missense mutation.
4.frameshift mutation.
5.transposon.
3
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Abnormally folded proteins that cause normal proteins to midfold are called
A) prions B) nucleotides C) peptides D) polymers E) triglycerides
Repair of thymine dimers using light to split the dimers apart into separate monomers is called
A. photoreactivation. B. photoreparation. C. photodedimerication. D. None of the choices are correct.
Identify the trait that is NOT characteristic of the antifreeze protein of polar-dwelling fish
a. beta pleated sheet structure b. allows freezing to an ultrafine slush c. contains 37 amino acids d. ice binding probably by polar amino acids e. protein now produced by genetically engineered yeast
What did Darwin find in South America that suggested that the Andes mountains had been gradually lifted up over millions of years?
a. marine snail fossils high up in the Andes mountains b. bird fossils at the top of mountains in Argentina c. dinosaur bones in the Amazon basin d. impressions of ocean waves at the top of a mountain