The sperm in the figure below were most likely produced by:
a. nondisjunction.
b. mutation.
c. X-linkage.
d. translocation.
e. normal meiosis.
a
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In total, a sensory system includes:
a. a sensory receptor b. nerve pathways from the receptor to the brain c. brain regions where the sensory information is processed d. a sensory receptor and nerve pathways from the receptor to the brain only e. a sensory receptor and nerve pathways from the receptor to the brain regions that process the information
Rigor mortis results from ___ after death.
A. the degeneration of muscles B. The presents of acetylcholine in the neuromuscular junction of the muscle cells C. the absence of carbon dioxide D. Lack of calcium in the muscles E. Lack of ATP in muscles
If two species have incompatible mating structures, then which reproductive isolation mechanism prevents them from
mating? a. sexual isolation b. gametic isolation c. temporal isolation d. behavioral isolation e. mechanical isolation
The plant in Row B of the accompanying figure demonstrates a photoperiodic response characteristic of:
a. short-day plants. b. day-neutral plants. c. long-day plants. d. long-night plants. e. intermediate-day plants.