How was it experimentally determined that "puffs" are transcriptionally active?
What will be an ideal response?
Puffs actively incorporate radioactively labeled RNA precursors during autoradiography assays. Bands that are not extended into puffs incorporate fewer radioactive precursors or none at all.
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An atom in which the number of electrons is different from the number of protons is called a(n)
a. ion. b. molecule. c. compound. d. isotope. e. acid.
Each of the following is a model for membrane structure except
A) Overton lipid coat. B) Langmuir monolayer. C) Gorter and Grendel bilayer. D) Singer and Nicholson fluid mosaic. E) Watson and Crick double helix.
Bacilli are ________ prokaryotes
A) spherical B) comma-shaped C) rod-shaped D) spiral
In the Hardy-Weinberg equation, p2 + 2pq + q2 = 1. If the dominant allele frequency is 0.8, what percent of the population will be homozygous dominant?
A. 0.32 B. 0.64 C. 0.40 D. 0.16 E. 0.04