Botany Chapter 15: Text Book Assignment (12th Ed.)
1) Suggesting that Natural Selection was the main mechanism
for evolution came originally from Darwin’s knowledge of
what?
2) Why would an invasive species be able to out compete native
species, sometimes to the point of extinction?
3) What was the main problem with Lamarck’s theory of
“acquired characteristics” once the principles of genetics were
discovered?
4) Why would a small change in a homeobox gene have a very
large, rapid effect on evolution?
5) What general idea did Darwin take from geologists that let
to his concept of biological change?
6) Why is overproduction important for a species’ long-term
survival?
7) In the example of a tree evolving thicker bark, what is the
selective force?
8) How can geographic isolation lead to speciation?
9) Why do separate species out compete hybrids during normal
periods, but hybrids often survive better after an environmental
change?
10) How does polyploidy help to explain why flowering plants
were able to evolve so rapidly?