As the heart contracts it forces the blood out with a great deal of force. Damage to which blood vessel will result in a forceful spraying of blood?
A. capillary
B. artery
C. vein
D. arteriole
E. Damage to any of the blood vessels will result in a forceful spray of blood.
Answer: B
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Which type of selection tends to increase genetic variation?
A. Disruptive selection B. Stabilizing selection C. Directional selection
The cortical reaction prevents multiple sperm from contributing their chromosomes to the egg.
Answer the following statement true (T) or false (F)
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