Exam 15: Genes and How They Work

The genetic code operates on all the following principles except

Protein synthesis proceeds by the ribosome

Crick and his colleagues proposed that the genetic code consisted of a series of blocks of information,called _____,each corresponding to an amino acid in the encoded protein.

The 3-nucleotide sequence of an mRNA is called the

The different components of the protein synthesizing machinery include all of the following except

The transfer of information from DNA to mRNA is referred to as

Because nucleic acid sequence information is changed into amino acid sequence information,polypeptide synthesis is known as

What is the likely consequence of a mutation in a point mutation affecting a branch point?

The many different functions and behaviors of living organisms are essentially based on the performance of their cells.The cells' performance in turn is dependent upon the

You are conducting a genetic screen to isolate nutritional mutants in yeast.Specifically,you want to isolate a histidine leucine double mutant.You start with a wild type yeast strain and mutagenize it with a UV light.Which of the following outlines the remaining steps for isolating such a mutant?

The bond that forms between the newly added amino acid and the previous amino acid on the chain is called a

Why are there only 45 different tRNA anticodons rather than 64 to match each of the mRNA codons?

In eukaryotic cells,mRNA is made as a copy of the DNA coding information in the

Given the sentence "THE FAT CAT ATE THE RED RAT," which of the following would represent a frameshift mutation?

How would a large chromosomal inversion affect the transcription of internal genes?

In eukaryotes,mRNA processing involves all of the following events except