In a rapidly changing environment, a population would likely benefit more from sexual reproduction than from asexual reproduction.
a. true
b. false
Answer: a. true
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A human female with only one X chromosome is said to have a condition called
A. X chromosome inactivation. B. Angelman syndrome. C. Turner syndrome. D. Klinefelter syndrome. E. Down syndrome.
B. pertussis colonies growing on Regan-Lowe medium yields which of the following colonial morphologic appearances?
a. Star-shaped colonies b. Mercury-drop colonies c. Yellow-pigmented colonies d. Shiny black-pigmented colonies
Many closely related duck species exhibit ____, the dramatic variation in the appearance of males but not females,
which is an almost certain sign of ____.
a. asexual reproduction; sexual selection b. asexual reproduction; artificial selection c. sexual dimorphism; sexual selection d. sexual dimorphism; artificial selection e. sexual uniformitarianism; sexual selection
Negative-feedback allows the body to return to what?
a. homeoregulation b. core body temperature c. homeostasis d. stasis