Temporal and habitat isolation is classified as what type of reproductive barrier?
a. gametic barriers
b. prezygotic barriers
c. postzygotic barriers
d. homozygotic barriers
e. heterozygotic barriers
b
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Experiments on the feeding preferences of newborn garter snakes born to coastal vs. inland California revealed that
even in the same species, differential instinctive responses can be ____.
a. learned b. genetic c. forgotten d. homozygous e. sex-linked
In Mendel’s experiments, which of the following generated identical F 1 and F 2 offspring ratios?
a. reciprocal crosses b. meiosis c. test crosses d. mitosis
Diseases can re-emerge for a variety of reasons. Evaluate the following statements and choose the one that does not provide evidence for a re-emergence.
A. Humans have avoided animal habitats. B. Pathogens evolve over time. C. Agents of bioterrorism have been introduced into a population. D. Climate change influences arthropods to expand their geographical areas.
A hormonal signal is detected by ____.
A. chloroplasts B. transport proteins C. receptor proteins D. statoliths E. plasma membranes