Download Evolution WKS - Sardis Secondary

EVOLUTION
WORKSHEET #1
Part A Match each term in Column B with its description in Column A. Write the letter of the correct
term in the space provided.
Column A
___ 1. study of all the genetic traits in a population
___ 2. the combined genetic makeup of all the members
of a population
___ 3. different versions of genes
___ 4. idea stating that under certain conditions, allele
frequencies in the population remain stable
from generation to generation
___ 5. constant state of allele frequency
___ 6. accidental change in gene frequency
___ 7. a change in allele frequencies within a population
Column B
a. genetic equilibrium
b. population genetics
c. genetic drift
d. gene pool
e. Hardy-Weinberg principle
f. alleles
g. biological evolution
Part B Complete the following.
1. Where do new variations in a population come from? _______________________________________
2. What is this distribution called? _________________
3. Before the industrial revolution, Biston Belularia moths where mainly grey in color, with some white
and some black moths. Draw the resulting graph and indicate what type of selection would occur in
each of the following:
a) soot blackened the trees darkening the lichens _______________
b) predators ate only the grey moths _______________
4. What type of selection is the following: __________________________
Give an example(scenario) of where/how it would occur:
5. Identify the 4 conditions of the Hardy-Weinberg principle that must be met to maintain genetic
equilibrium. ___________________________________________________________________________
_____________________________________________________________________________________
6. Explain how population size is a factor the Hardy-Weinberg conditions.
_____________________________________________________________________________________
_____________________________________________________________________________________
7. List some events that can lead to genetic drift. _____________________________________________
8. Explain how the terms in each pair are related.
i. species, natural selection: _______________________________________________________
_____________________________________________________________________________________
ii. isolation, divergent evolution: ____________________________________________________
_____________________________________________________________________________________
iii. niche, adaptive radiation: _______________________________________________________
_____________________________________________________________________________________
iv. convergent evolution, niche: ____________________________________________________
_____________________________________________________________________________________
9. Explain how isolation can lead to speciation. ______________________________________________
_____________________________________________________________________________________
10. Explain the difference between adaptive radiation and convergent evolution. ___________________
_____________________________________________________________________________________
11. Give an example of two species or organisms that have developed differences as a result of
divergent evolution. Explain your answer.___________________________________________________
_____________________________________________________________________________________
12. Give an example of two species of organisms that show evidence of convergent evolution. Explain
your answer. __________________________________________________________________________
_____________________________________________________________________________________