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