Questions from Genetics

Q: What are the functions of transcriptional activator proteins and repressor proteins?

What are the functions of transcriptional activator proteins and repressor proteins? Explain how they work at the molecular level.

Q: Is each of the following statements true or false? A

Is each of the following statements true or false? A. An enhancer is a type of regulatory element. B. A core promoter is a type of regulatory element. C. Regulatory transcription factors bind to re...

Q: Transcription factors usually contain one or more motifs that play key roles

Transcription factors usually contain one or more motifs that play key roles in their function. What is the function of the following motifs? A. Helix-turn-helix B. Zinc finger C. Leucine zipper

Q: What is a clade?

What is a clade?

Q: Which type of snoRNA causes an rRNA to be methylated?

Which type of snoRNA causes an rRNA to be methylated?

Q: The binding of a small effector molecule, protein-protein interactions

The binding of a small effector molecule, protein-protein interactions, and covalent modifications are three common ways to modulate the activities of transcription factors. Which of these three mecha...

Q: Describe the steps that need to occur for the glucocorticoid receptor to

Describe the steps that need to occur for the glucocorticoid receptor to bind to a GRE.

Q: Let’s suppose a mutation in the glucocorticoid receptor does not prevent the

Let’s suppose a mutation in the glucocorticoid receptor does not prevent the binding of the glucocorticoid hormone to the protein but prevents the ability of the receptor to activate transcription. Ma...

Q: Define epigenetics. Are all epigenetic changes passed from parent to offspring

Define epigenetics. Are all epigenetic changes passed from parent to offspring? Explain.

Q: What are the contrasting roles of trithorax and polycomb group complexes during

What are the contrasting roles of trithorax and polycomb group complexes during development in animals and plants?