What gene is critical for establishment of X-inactivation in mammals?
What will be an ideal response?
Xist
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After PCR, the amplification control has failed to yield a product. What should you do?
a. Report out Indeterminate b. Report out Negative because there was no amplification from the sample c. Check the original DNA or RNA prepara-tion. If it is adequate, repeat the amplifi-cation. If not, re-isolate the nucleic acid. d. Repeat it using a higher concentration of amplification control in the reaction.
Before ARF transcription factors can trigger auxin-induced gene expression, what must happen?
A. Auxin binds to ubiquitin, a degradation tag. B. Ubiquitin must destroy TIR1 to release Aux/IAA proteins. C. Auxin must bind to the ARF transcription factor. D. Auxin degrades Aux/IAA proteins which repress ARF transcription factors. E. Auxin binds to TIR1, an auxin receptor.
When identifying a therapeutic dose, which concentration of an antibiotic is usually sought for treatment?
A) The highest concentration the patient can tolerant, because it will work quicker. B) The lowest effective concentration, because antimicrobics can be toxic.
Children with Bruton-type agammaglobulinemia are highly susceptible to recurrent bacterial infections.
Answer the following statement true (T) or false (F)