Crossing over would contribute to the variability in genetic expression between siblings.
a. true
b. false
a. true
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Which of the following is an agranular leukocyte?
a. basophil b. eosinophil c. monocyte d. thrombocyte
The hormone(s) responsible for preparing the breasts for lactation during pregnancy is (are)
A. estrogen. B. progesterone. C. oxytocin. D. prolactin. E. both estrogen and progesterone.
To produce a contraction similar to the one in graph (b), the muscle
A) must be stimulated to the point of fatigue. B) must be stimulated again before it has relaxed from the previous stimulation. C) is excited by a stimulus of increasing intensity. D) must go through a rapid series of isolated twitches. E) generates more and more thin and thick filaments.
A biomarker is
A) any chemical in the body. B) a gene that encodes a particular protein. C) always a protein. D) a body chemical associated with a particular disease or exposure to a toxin.