The bones in the forelimbs of a mammal
a. can often be traced to a common ancestor.
b. offer no evidence to support the theory of
evolution.
c. perform the same function no matter which
species they are in.
d. may exhibit either analogy or homology but not
both when compared to the forelimb of another
animal.
e. show convergence with some invertebrate
structures.
Answer: a
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During the snowball earth temperatures at the equator rarely exceeded -20 degrees Celsius. Why didn't heat from the sun melt the ice?
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In the noncyclic pathway,
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