1. Finish last few notes (get handout)
2. Test Review WS
3. Concept map
hwk: study for test tomorrow
Test Review POPULATION GENETICS (Evolution Test #2)
1. Whether
or not a trait is suited or not suited depends on the _environment__.
2. Define
fitness. The ability to survive and reproduce
3. The
result of natural selection is… changes in the inherited characteristics of a population over
time, changes in the gene pool over time
4.
What is a gene pool? The total genes (or alleles) carried
by members of a population
5. What
is allele frequency? How often an allele appears in a population
6. Natural
selections acts directly on genotype/phenotype
(Circle one.)
7. Natural
selections causes _gene pools/allele frequencies
___ to change over time.
8. Define
mutation change in the DNA
9. What
other 2 things, besides mutation, lead to variation? Sexual reproduction and lateral
gene transfer
10. What
is the difference b/w a single gene trait and a polygenic trait? Single gene
trait results in 2 phenotypes, whereas a polygenic trait results in several
phenotypes (bell curve)
11. Know
directional, stabilizing, and disruptive selection. (See graphs)
12. Define
genetic drift. A change in the allele frequency due to a CHANGE event
13. What
is genetic equilibrium? When the allele frequency stays exactly the same
14. What
is the Hardy-Weinburg Principle? Large population, no mutations, random mating, no
immigration/emigration, no natural selection
15. What
is reproductive isolation?
List and define the 3 types.
The separation of populations such that they
can’t interbreed,
geographical isolation, behavioral isolation, temporal isolation.
16. What
defines the members of a species? Can interbreed and have fertile offspring
17. Define
and explain speciation. Formation of a new species, such as the finches on the Galapogos
Islands
