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LAB EXPERIMENT: DNA and Protein Synthesis Learning Objectives Upon completion of this laboratory, you will be able to: ? Review the structure and function of DNA.? Identify the codons that code for amino acids in DNA and RNA.? Explain the purpose of start and stop codons in protein synthesis.? Summarize […]

A new dominant mutation occurs in a population of red-winged blackbirds that triples the size of the red shoulder patch in males. Individuals expressing the new mutation are far more conspicuous to predators and this causes their survival to be reduced by 50%. But their ability to repel territory intruders […]

A strain of E. coli contains a mutant tRNALeu. Instead of recognizing the codon 5′ CUG 3′, as it does in nonmutant cells, the mutant tRNA recognizes the codon 5’GUG3′. A missense mutation of another gene, bug, affecting amino acid number 28 of the Bug protein, is suppressed in cells […]

Sperm cells bind to an egg via ZP3, a glycoprotein in the glycocalyx of the egg, and can be inhibited from doing so by adding an excess of free oligosaccharide. You are interested in finding the protein on the sperm cell responsible for binding to ZP3. Which of the following […]