In female mammals, most of the inactive X chromosome becomes:a
associated with histones.
b. transcriptionally active.
c. euchromatin.
d. replicated.
e. heterochromatin.
e
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In a study examining the effects of disturbances and recruitment on the growth of coral in a portion of the Great
Barrier Reef, researchers concluded that changes in the coral colonies are ____.
a. due to external factors only. b. due to internal factors only. Chapter 53 - Population Interactions and Community Ecology Cengage Learning Testing, Powered by Cognero Page 16 c. due to both external and internal factors. d. solely due to human interference. e. not observable after disturbances
Chemotherapeutic agents that are artificially produced are most specifically referred to as ________.
A. antimicrobial agents B. synthetic drugs C. semisynthetic drugs D. antibiotics
What makes water a solvent?
a. Fats dissolve in it. b. Ions and polar molecules dissolve in it. c. It mixes well with alcohol. d. It evaporates easily. e. It contains no minerals.
Mutations in the lacI and lacO genes of the lac regulatory system in E. coli often lead to full transcription of the three structural genes, even when no lactose is available to the organism. Such mutations would be called ________
Fill in the blank(s) with correct word