Which of the following can switch transcription from ON to OFF ? From repressor protein binding DNA silencer to inducer binding the repressor protein From chromatin condensation to chromatin decondensation From activator protein binding DNA enhancer to inhibitor binding the activator protein From activator protein dropping from DNA enhancer to inducer binding the activator proteinWhich of the following can cause silencing of mRNA by a phenomenon of RNA interference? Antisense RNA Small interfering RNA Small nuclear RNA Small nucleoar RNAAntisense RNA binds to the mRNA and prevents translation. This is gene regulation on which level? Transcriptional Translational Post-transcriptional Post-translational.

1. Which of the following cytoplasmic signaling molecules is an important regulator of transcription
downstream of Wnt signaling? Stat 1 Glit GSK-3 beta MEK Question 15 1 pts Which of the
following statements is FALSE? Cells are specified before they are determined. Surrounding cells
always provide cues for specifying a particular cell fate. Specification is a reversible step in the
commitment of a cell to a particular cell fate. Cell fates are irrreversible after determination.
Question 16 You are designing a targeting vector for deleting the Shh gene via replacement of the
protein coding region with EGFP. What element of your targeting vector provides information
about the desired genomic location of EGFP gene insertion? Poly A tail