Which of the following processes is associated with the altering of histone proteins in vivo?
A) acetylation
B) alkylation
C) methylation
D) transhydroxylation
E) both choices A and C
E) both choices A and C
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Semiconservative replication is so-called because one strand of each new DNA molecule is ____________________, while the other is ______________________.
Fill in the blank(s) with the appropriate word(s).
A group of interbreeding individuals occupying the same habitat at the same time is a(n)
A. quadrat. B. equilibrium. C. population. D. species. E. guild.
Which of the following is NOT a drawback in using a microscope to count cells?
a. Debris in the sample may be mistaken for microbial cells. b. Motile cells must be immobilized before counting. c. Cells are difficult to stain. d. Without specific stains, dead cells cannot be distinguished from live cells.
A plant inherits a regulatory element that increases the production of red pigment in its flowers. This type of regulatory element is known as an _________
Fill in the blank with the appropriate word.