The classical hypothesis of speciation is comprised of a three-step process. What are the three steps?
What will be an ideal response?
Isolation of populations; divergence in traits; reproductive isolation.
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Which group of adult tissues is derived from the mesoderm?
a. lining of the digestive tract, liver, pancreas b. muscles, bones, cartilage c. skin, brain, retina d. skin, liver, pancreas e. lining of respiratory tract, thyroid gland, urinary bladder
The figure shown above is of what kind of tissue?
a. blood b. adipose c. bone d. cartilage e. dense connective
The range of a population
A. changes over time due to external events. B. is stable and almost never changes. C. only changes after a disaster has wiped out a former range. D. is very fluid and changes frequently in a random fashion. E. only changes due to iteroparity.
What reptilian taxon is extant (has at least some members that are still living; opposite of extinct)?
A. Saurischia B. Ornithischia C. Squamata D. ichthyosaurs E. theropods