The unexpressed regions of split genes are called ________.
A. introns
B. endons
C. codons
D. exons
Answer: A
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An early sign of plaque formation in coronary arteries is
a. a heart attack. b. hypertension. c. hypotension. d. angina pectoris. e. rapid heart beat.
________ pulls water through a plant
A) Transpiration B) Photosynthesis C) Pressure flow D) Adhesion
Which of the following is NOT a mechanism used by bacteria to condense their DNA?
A. Super coiling B. Packaging the DNA with histone proteins C. Looping of the DNA D. Increase or decrease the number of turns in the DNA E. Anchoring the DNA loops with DNA-binding proteins
Four of the five answers listed below are
conditions caused by chromosomal nondisjunction. Select the EXCEPTION.
a. Down syndrome b. Huntington's disease c. Turner syndrome d. Klinefelter's syndrome e. trisomy 18