Epigenetic effects on gene expression may occur through covalent modifications of ________ and ________
Fill in the blank with correct word.
Answer: DNA; histones
Biology & Microbiology
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The respiratory pacemaker is located in the
a. lungs. b. cerebral cortex. c. brain stem. d. bronchioles. e. alveoli.
Biology & Microbiology
The body's "thermostat" is located in the
a. heart. b. spinal cord. c. thalamus. d. hypothalamus. e. cerebellum.
Biology & Microbiology
Smooth muscle responses are controlled by the somatic nervous system
Indicate whether the statement is true or false
Biology & Microbiology
The phenotypic changes shown in the figure above represent
A. speciation based on sexual selection. B. gradualism. C. punctuated equilibrium. D. horizontal gene transfer.
Biology & Microbiology