Which of the following is the correct sequence for the cell cycle?
A. S-G2-M-G1
B. S-M-G1-G2
C. S-G1-M-G2
D. S-M-G2-G1
E. S-G1-G1-M
Answer: A
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F-actin filaments
A) are composed of four linear strands. B) are composed of polymerized G-actin monomers wound around each other in a helix. C) are oriented similar to DNA, with strands helical and antiparallel to one another. D) are composed of G-actin dimers. E) polymerize at the same rate in both directions from both ends of the filament.
If 2 spot (S) is dominant to 4 spot (s), give the genotypes for the parents in the following crosses:
(a) 2 spot × 2 spot yields 2 spot and 4 spot (b) 2 spot × 4 spot yields only 2 spot (c) 2 spot × 4 spot yields 2 spot and 4 spot (d) 2 spot × 2 spot yields only 2 spot (e) 4 spot × 4 spot yields only 4 spot What will be an ideal response?
DNA polymerases require which of the following elements to replicate DNA?
A. A ribosome, a template, an RNA polymerase B. A source of energy, an RNA strand, a ribosome C. A template, a primer, a source of energy D. A source of energy, a template, an RNA polymerase
The cells that line the inside of the blastopore become the
A) nervous system. B) muscles. C) skin. D) skeleton. E) digestive tract.