Inbreeding is due primarily to
a. migration.
b. non-random mating.
c. mutation.
d. natural selection.
e. adaptive radiation.
B
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Plants can close tiny gaps in their epidermis, referred to as ____, to limit water loss from internal tissues
a. periderm b. stomata c. endoderm d. tracheids e. sclereids
The cell in this illustration is in ____
a. prophase I. b. metaphase I. c. anaphase I. d. prophase II. e. anaphase II
A useful hypothesis typically accomplishes these two things:
A. it is falsifiable and clear B. it clearly establishes a null hypothesis and it generates a testable prediction C. it can be easily disproved and will be considered a theory if not disproved D. it frames an experiment that can shed light on the observation and guides design of the experiment
Birds, snakes, lizards, turtles, and crocodiles are all thought to share a common ancestor and several homologous traits. Assuming that this is true, these groups of animals and their common ancestor would represent
A. an outgroup. B. a monophyletic group. C. homoplastic convergence. D. a polyphyletic group. E. a species cluster.