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Q1. A mutation in DNA generates a UGA stop codon in the middle of the RNA coding for a particular protein. A second mutation in the cell leads to a single nucleotide modify in a tRNA that allows the correct translation of the protein. The altered tRNA translates the UGA […]

Comparison of Two Articles on Pepper Moth Evolution This week we started learning about evolution, so the two articles you will be comparing in this conference deal with the evolution of the Peppered Moth during the Industrial Revolution in England. Read the following articles and address the questions listed below. […]

Genetics with Drosophila melanogaster lab Assignment Pre-Lab Assignment Q1. Several weeks ago, a homozygous wild-type (winged) strain of flies was crossed with a homozygous apterous (wingless) strain of flies. Using standard genetic notation, this cross can be represented as ap+/ap+ × ap/ ap. The F1 progeny of this cross were […]

1. Ionization status of different amino acids (arginine, aspartic acid, tryptophan ) at PH 7 ,PH 5, PH 9 2. Is the lac operon under positive control, under negative control, or both? Explain your answer. 3. Briefly explain what allosteric regulation is, then describe two specific examples. One example should […]