Chapter 23 Review Questions        This is  a very important chapter   Home Page

1. T or F   Our present theory of evolution uses information from many fields of science.

2. Define population  and define  species.

3. What is a gene pool and how does a mutation( microevolutionary change)  affect the gene pool?

4. State the Hardy Weinberg Theorem. p448

5. Write the Hardy-Weinberg equation and define and identify each term in the equation.

6.  How does the Hardy Weinberg Theorem support the Theory of Natural Selection.

7. Write the 5 conditions that must be satisfied to maintain a Hardy Weinberg equilibrium in a population.

8. State 4 factors that are causes of microevolution.

9. Genetic drift occurs most often in ( large,  small) populations and is caused by ( natural selection, chance )

     and results in the ( change in,  maintenance of ) allele frequency in the gene pool.

10. The bottleneck effect occurs when (  natural selection,  genetic drift ) occurs due to a ( small, large ) portion of a population dieing off.  The remaining small gene pool  ( is,  is not  ) representative of the original population.  Bottle necking tends to  (  reduce,  increase  ) variability.   The founder effect is similar to the bottleneck effect in that a ( large,  small ) population moves into an area and the gene pool for this population (is,  is not ) representative of the original gene pool. The new gene pool shows genetic drift away from the original gene pool.

11. p 452  How is the Hardy Weinberg Theorem incompatible with the theory of Natural Selection?

12.  Give two examples of polymorphisms in the human population

13.  T or F Most point mutations have an effect on the organism.

14.  T or F  Mutations like deletions, inversions, translocations always have a negative effect on the organism.

15.  T or F   Sexual reproduction and natural selection gets rid of unfavorable genes in the gene pool.

16.  Define Darwinian fitness

17.  Sketch 3 graphs to show an original population and the resulting population after: directional selection, diversifying selection and stabilizing selection.*******

18.  List 4 reasons why evolution cannot produce perfect organisms.

19.  What is convergent evolution?  Give an example.

20.  What is adaptive radiation?