Which statement is False concerning speciation?
A. Speciation can occur from one ancestral population in one geographic region.
B. Speciation can occur from one ancestral population in two geographic regions.
C. The distinction between different species is always well defined.
D. Speciation can occur artificially during domestication.
Ans: C. The distinction between different species is always well defined.
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Moss sperm are produced in:
A. archegonia B. sporophytes C. antheridia D. clamp connections E. none of the other choices provided
The first host response to a nonspecific tissue injury is described as
A. inflammation. B. reaction. C. antibodies. D. trauma.
The DNA in the nucleus of a typical human cell nucleus would be about ____ long if fully stretched
out.
a. 2 m b. 10 mm c. 100 m d. 10 ?m e. 2 km
Resolving power
a. is the amount that an object's image is enlarged. b. is the extent to which detail in an image is preserved during the magnifying process. c. is the degree to which image details stand out against their background. d. focuses light rays emanating from an object to produce an image.