In the table below the product of gene R binds to the promoter of gene A. What happens in (b)? a. Mutant protein A produced b. No Protein A produced c. No protein C produced d. No protein R produced

In a recent study, scientists used gene editing to treat both sickle cell disease and beta-thalassemia. How did they do this? O A. They suppressed the production of fetal hemoglobin. B. They inhibited transcription of BCL11A. O C. They suppressed the production of the abnormal adult hemoglobin. D. They inhibited transcription of the gamma-globin gene.

What is an operon ? a. A series of genes controlled by the same operator b. A series of genes on the same mRNA molecule c. A series of genes that all have the same function d. A series of genes all regulated by the same repressor

Which of the following DNA regions is NOT involved on gene expression regulation in Eukaryotes?. ( not enhancer or promotor-proximal) A. Promoter-proximal B. Promoter C. Enhancer D. Operator

Describe how a mutation in the regions below could cause such a drastic effect that it creates a“null allele.”a. Gene promoterb. Intronc. Exond. 3’-UTR

Which of the following statements about the lac operon is correct? 1. lacZ, lacY and lacA proteins are translated using the same RNA molecule. 2. Lacl is a gene that codes for allolactose. 3. Allolactose activates transcription of lacz, lacY and lacA. 4. In the presence of lactose, the repressor is active. A. 1, 2 and 3 B. 1 and 3 C. 2 and 4 D. 4 only E. All of 1, 2, 3, and 4 are correct.