In Chapter 1 you have read about the environmental mistakes…

In Chapter 1 you have read about the environmental mistakes made on Easter Island. On Tikopia, another small island, the people acted in other ways. When they realized that the pigs they had imported were damaging the environment, they killed them all. They had to have permission from a chief to fish, which prevented overfishing. They also practiced contraception. These actions all indicate that ________.

You have isolated a lac metabolism mutant that contains a mu…

You have isolated a lac metabolism mutant that contains a mutation in the lacI gene.  This mutation alters its inducer binding site such that it cannot recognize lactose.  Which of the following best describes the phenotype you would expect to see in this mutant?

Put the following events of transcription in chronological o…

Put the following events of transcription in chronological order. Sigma binds to the promoter region. The double helix of DNA is unwound, breaking hydrogen bonds between complementary strands. Sigma binds to RNA polymerase. Sigma is released. Transcription begins.