1. What does heterochromatin mean? a. The genes are expressed and it is involved with gene activation. b. The genes are expressed and it is involved with gene silencing. c. The genes are not expressed and it is involved with gene silencing. d. The genes are not expressed and it is involved with gene activation

1). Tumor suppressor proteins monitor DNA and detect damage. Some cancers evade this detection by removing tumor suppressor proteins from the nucleus. An overproduction of what transport molecule could cause this? What is one example of how this overproduction might be targeted for cancer treatment (suggest a hypothetical treatment that would prevent the cancer)? 2) :) Based on the course content thus far, would mRNA vaccines pose a risk to the genomic DNA in a cell? Explain.

. Dosage compensation is necessary because a. some regions of the genome contain more genes than others.b. genes near heterochromatin tend to be silenced. c. enhancers can activate transcription whether they are upstream or downstream of a gene. d. genes on the X chromosome have twice as many copies in females as in males

Which of the following types of mutations are advantageous to cancer cell growth? a. Those resulting in defective mismatch repair b. Inherited defects in double-strand DNA repair c. A defect in nucleotide-excision repair d. A, B, and C e. None of the above