Two species of Gelsemium spp., a flowering vine plant, share the same habitat and have similar insect pollinators. However, pollination occurs for Gelsemium semperviren from mid-January to late March, and for Gelsemium rankinii from late March to mid-April. This represents
A. gametic isolation.
B. a process analogous to behavioral isolation in animals.
C. temporal isolation.
D. ecological isolation.
E. mechanical isolation.
C. temporal isolation.
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The cilia of auditory hair cells are embedded in the ____
a. tectorial membrane b. semicircular canals c. cochlear duct d. scala tympani e. scala vestibuli
The human germ cell line (23 pairs of homologous chromosomes) allows for how many combinations of maternal and
paternal chromosomes every time a gamete is produced? a. 223 b. 232 c. 8 d. 8,000 e. 23
Which disease may be associated with low levels of body fat and low levels of estrogen?
A) diabetes B) stroke C) heart attack D) osteoporosis
Freshwater is most likely to become contaminated or polluted by ________ from urban and rural environments
Fill in the blank(s) with correct word