Reproductive isolation is more likely to occur when
A. hybrids are less fit than members of the parent species.
B. hybrids are more fit than members of the parent species.
C. there are no differences between the fitness of the parent species and hybrids.
D. None of the answer choices are true.
Answer: A
You might also like to view...
Provide a formal equation for h2 (narrow-sense heritability)
What will be an ideal response?
Photosynthesis and cellular respiration are both complementary and relatively balanced, but early history of life on Earth showed increasing oxygen concentrations. This indicates that
a. both photosynthesis and respiration were occurring at approximately the same levels. b. neither photosynthesis nor respiration were occurring. c. the amount of photosynthesis occurring exceeded the amount of cellular respiration. d. the amount of cellular respiration occurring exceeded the amount of photosynthesis.
fiber helps to prevent what
What will be an ideal response?
All but which of the following are good barriers to invasion by microbes?
a. mucous membranes b. eye secretions c. broken skin d. urine e. gut bacteria