How are transcription factors like a switch?
What will be an ideal response?
ANS:
Transcription factors bind to regulatory enhancer sequences in DNA that are upstream of a gene. Once bound, the factors can help a polymerase to transcribe the DNA into RNA, thereby turning on the gene.
You might also like to view...
The replicative form of nucleic acid in filamentous phages is
A. dsDNA. B. dsRNA. C. positive ssRNA. D. negative ssDNA.
Which is easier to establish in a pure-breeding population, a dominant or a recessive gene? What will be an ideal response?
What will happen by the end of the eighth week of development?
A. Limbs form, and paddles at their ends are sculpted into digits. B. The umbilical cord and the circulatory system develop. C. All of the organ systems will be formed, and apoptosis has eliminated the tail. D. The fetal heartbeat can be heard clearly through a stethoscope positioned on the mother’s abdomen. E. The fetus has begun not only to detect sounds but also to remember some of them.
All adenoviruses cause mild respiratory disease
Indicate whether the statement is true or false