If an individual carries a pair of alleles that are the same, the individual is ________ for the trait
A) homologous
B) homozygous
C) heterozygous
D) autosomal
E) polygenic
Answer: B
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Which of the following does not occur in a photoreceptor during exposure to light?
a. membrane hyperpolarization. b. closure of Na+ channels in the outer segment. c. increased transmitter release from the synaptic terminal. d. absorption of light by photopigments e. closure of Ca2+ channels in the synaptic terminal.
An individual's hematocrit is dependent on his or her
A. sex. B. altitude. C. age. D. All of the choices are correct.
The lateral projections on cervical, thoracic, and lumbar vertebrae are called
A. transverse processes. B. lateral process. C. transverse foramina. D. pedicles. E. spinous processes.
A runner collapses during a race and is examined by a doctor. They have lost the ability to plantar flex at the ankle. Which of the following is probably the injured muscle?
A. Tibialis anterior B. Gastrocnemius C. Biceps femoris D. Semimembranosus