You design a guide RNA to target your gene of interest, which you will express attached to a scaffold RNA. You transform cells with Cas9, the guide+scaffold RNA, and an HDR template to introduce a mutation into the target sequence (a 3 bp deletion located 5 bp upstream of the Cas9 cut site and a base pair substitution 15 bp upstream of the Cas9 cut site). Which of the outcomes below are possible? Type possible or not possible in each answer box. Answer: A. Cas9 does not cut target sequence B. Cas9 cuts target, 10 bp deletion introduced C. Cas9 cuts target, no mutations introduced D. Cas9 cuts target, desired 3 bp deletion introduced but not the substitution E. Cas9 cuts, 3 bp deletion and substitution introduced

You are examining the processing of rRNA in E. Coli using a Northern blot. Normally, a 30S rRNA transcript is transcribed and then processed (cleaved) into 23S, 16S, and 5S mature rRNAs. You suspect the gene RPO7 is involved, so you make a mutant strain of bacteria and compare it to a Wild-type (Wt) strain. You run RNA extracts from the two strains on a Northern blot and probe it with a radioactive probe that binds to all rRNA. You get the following results.

How do I draw the sequence and explain the process for each step? Draw the sequence of molecular events that occurs to induce STAT transcription factor localization to the nucleus. To complete this, you will draw the first step that occurs, then draw a new figure with the second step that occurs, then draw a new figure with the third step that occurs, and so on until you have completed all of the steps. On the drawing, briefly label each molecular event (each drawing). For this brief label, explain what is happening during each step.

Knock out mice that are mutant for a gene product X die. Variants of the X gene that were reintroduced through homologous recombination indicate that variant proteins that lack the C-terminal region of the protein cannot rescue the lethality (did not allow them to live), and always localized to the cytoplasm. Those that retained the C-terminal region rescued the lethality (conferred viability!) and were consistently localized within the nucleus. RNA-seq analysis of the mutant cells vs the wild-type cells indicated that the expression of many genes that are essential for neural function was reduced in the knock-out mutant cells. The N-terminal region of Protein X is 100% conserved between mouse and humans at both the amino acid and the nucleotide level. The predicted mouse mRNA sequence is shown below where the AUG corresponds to the translational start site (AUG). 5’-AUGUUUACAGAGGGGAAU... -3’     d) What motif could be present to direct this protein to its correct destination?  e)…

This chapter describes different types of TEs, including insertionelements, simple transposons, LTR retrotransposons, and non-LTRretrotransposons. Which of these four types of TEs have the followingfeatures?A. Require reverse transcriptase to transposeB. Require transposase to transposeC. Are flanked by direct repeatsD. Have inverted repeats

Knock out mice that are mutant for a gene product X die. Variants of the X gene that were reintroduced through homologous recombination indicate that variant proteins that lack the C-terminal region of the protein cannot rescue the lethality (did not allow them to live), and always localized to the cytoplasm. Those that retained the C-terminal region rescued the lethality (conferred viability!) and were consistently localized within the nucleus. RNA-seq analysis of the mutant cells vs the wild-type cells indicated that the expression of many genes that are essential for neural function was reduced in the knock-out mutant cells. The N-terminal region of Protein X is 100% conserved between mouse and humans at both the amino acid and the nucleotide level. The predicted mouse mRNA sequence is shown below where the AUG corresponds to the translational start site (AUG). 5’-AUGUUUACAGAGGGGAAU... -3’ Q3a) Using a total RNA sample obtained from human cells, what is the first primer you would…

Give the levels of Beta-galactosidase activity (high or low or zero) expected for the following partial diploids for the lac operon strains.

In a competitive RNA microarray experiment, you hybridize two samples to the same chip.  Before hybridization, sample A is labeled with red fluorescence and Sample B is labeled with green fluorescence.  Spot 1142 is yellow.  What does this tell you about the relative abundance of the mRNA corresponding to this spot in the two samples? Group of answer choices It is equally abundant in both samples A and B. It is more abundant in B than A. It is more abundant in A than B. It is not present in either A or B.

A newly identified protein from the  cells of the Panopyra plant on Pandora was shown to inhibit translation of its target genes by binding to the 5’ UTR of the mRNA and preventing ribosome binding.  A possible way this inhibition may be relieved by an sRNA would be:  Group of answer choices a)The sRNA acts as a silencer, suppressing the inhibitory protein and allowing translation to take place. b)The sRNA acts as a decoy, sequestering the inhibitory protein and allowing translation to take place. c)The sRNA acts as a marker, flagging the inhibitory protein for ubiquitination and allowing translation to take place.

A sample of E.coli cells is transformed with a plasmid containing a transcriptional fusion including the promoter of an E.coli housekeeping gene and the LacZ gene. The transformed cells are plated out on selective medium containing X-gal. Which of the following best describes the likely results. a. Colonies will only be blue if lactose is also included in the growth medium. b. Colonies will only be blue if lactose and glucose are included in the growth medium c. Most of the colonies should turn blue. d. Presence of any white colonies may indicate deletion or mutation of the promoter. e. Both c. and d. are correct