Hypothesize and diagnose the impact of variability on lac operon regulation

Analyzing Cloned Sequences What kind of information can a DNA sequence provide to a researcher studying a disease-causing gene?

Binding of _______ to _______ in DNA can increase the rate of transcription of specific genes. a. activators; repressors c. repressors; operators b. activators; enhancers d. repressors; enhancers

Through alternative splicing, eukaryotes (a) reinforce gene inactivation (b) prevent transcription of heterochromatin (c) produce related but different proteins in different tissues (d) amplify genes to meet the requirement of high levels of a gene product (e) bind transcription factors to enhancers to activate transcription

In selecting target cells to receive a transferred gene in gene therapy, what factors do you think would have to be taken into account?

Two types of mutations discussed in this chapter are (1) nucleotide changes and (2) unstable genome regions that undergo dynamic changes. Describe each type of mutation.

The promoter and terminator regions of genes are important in: a. coding for amino acids b. gene regulation c. structural support for the gene d. intron removal e. anticodon recognition

Mechanisms that govern gene expression do not operate during _______. a. transcription c. translation b. RNA processing d. knockouts

IS. Alternative splicing has been estimated to occur in more than 95% of multi-exon genes. Which of the following is not an evolutionary advantage of alternative splicing? Alternative splicing increases diversity without increasing genome size Different gene isoforms can be expressed in different tissues Alternative splicing creates shorter mRNA transcripts Different gene isoforms can be expressed during different stages of development.

Control of gene expression in eukaryotic cells occurs at which level(s)? a. only the transcriptional level b. epigenetic and transcriptional levels c. epigenetic, transcriptional, and translational levels d. epigenetic, transcriptional, post-transcriptional, translational, and post-translational levels