Download Study Guide Chapter 11

Name: ____________________
Study Guide Chapter 11
Mendelian Genetics
Directions: Complete the assignments outlined in this study guide and hand them in at the
beginning of the assigned period. Homework assignments and review presentations can be
found on my wikispace. I will be checking your progress periodically throughout this unit, so
make sure to keep up with your reading. This packet will be due on the day of the exam.
Tuesday (4/28/2009)
o Read section 11.1 of your textbook (pgs. 263-266) and answer the following questions:
1. Who is Gregor Mendel and how did he contribute to the science of Genetics?
2. Briefly describe Mendel’s research. What types of crosses did he study?
3. Define the following terms:
 Hybrid:

First Filial Generation:

Gene:

Allele:
4. Describe the principle of dominance. Use the following example to illustrate your
explanation:
In humans brown eyes are dominant and blue eyes are recessive
5. Mendel’s research disproved the commonly held belief of blending traits, in
which a tall plant and a short plant would give birth to a medium size plant.
Using Mendel’s principle of dominance, describe why the blending traits
hypothesis is incorrect.
6. Although Mendel disproved the blending traits hypothesis in pea plants, it does
occur in many traits in humans. Using your worldly knowledge, name one trait in
which blending occurs in humans.
Name: ____________________
Wednesday (4/29/2009)
o Your completed sea anemone paper is due today. All parts should be placed into one
coherent paper. Each section should have a title (i.e. methods). Make sure to properly
label any figures/diagrams that you may have included in your paper.
o Read section 11.2 of your textbook (pgs. 267-269) and answer the following questions:
1. How are the principles of probability used to predict the outcomes of genetic
crosses?
2. Define the following terms and provide an example of each:
 Genotype:

Phenotype:

Homozygous:

Heterozygous:
3. Draw a punnet square for the following cross. In humans, dimples are recessive
(d) and not having dimples is dominant (D). If a man that is homozygous no
dimples, marries a woman that is heterozygous what percent of their children will
have dimples?
4. Read the last section “Probabilities predict averages”. Why is sample size
important in genetics (and really in any study)?
5. Critical Thinking: Taking into consideration your answers for 2 and 3, if we
surveyed all the students in Bangor, would you expect to find more people having
dimples or not having dimples? Explain your answer using the genetic
vocabulary.
Name: ____________________
o Complete the “Punnet Square Introduction Activity: Breeding Albino Lemmings”
worksheet and hand it in at the beginning of the block. A link to the website is on my
homepage.
Thursday (4/30/2009)
o Read section 11.3 of your textbook (pgs. 270-274) and answer the following questions:
1. Describe Mendel’s principle of independent assortment of alleles in your own
words. Use an example to illustrate your answer.
2. Previously we have been conducting monohybrid crosses. The crosses in figures
11-9 and 11-10 are both considered dihybrid crosses. Compare and contrast
monohybrid crosses with dihybrid crosses using these figures.
3. Write Mendel’s principles in your own words. Use examples to illustrate your
definitions.

Inheritance of biological characteristics:

Principle of dominance:

Principle of segregation:

Principle of independent assortment of alleles: (You do not need to write
this one again b/c you just did in answer #1)
4. Why are Mendel’s findings referred to as principles and not laws?
Name: ____________________
5. Describe the following scenarios. Use an example to illustrate each of your
answers:
 Incomplete Dominance:

Codominance:

Multiple Alleles:

Polygenic Traits:
Friday (5/1/2009)
o Finish the incomplete dominance crosses that we began on Thursday in class. Make sure
to follow my way of conducting these crosses because I will be collecting them and
grading them.
o Complete the “Blood Type” worksheet found on my wikispace and hand this worksheet
in at the beginning of class.
Monday (5/4/2009)
o Read section 11.5 in your textbook (279-280) and answer the following questions:
1. What are linked genes? Provide an example of two genes that are probably linked
in humans.
2. Describe why Mendel’s principle of independent assortment of alleles seems to be
violated by the concept of linked genes.
3. Describe why the author believes that linked genes do not violate Mendel’s
principle of independent assortment of alleles.
Name: ____________________
4. What are gene maps and how are they produced?
5. How does crossing over make gene mapping possible?
o Complete the “Antagonistic Pleiotropy” worksheet that is found on my wikispace and
hand this assignment in at the beginning of the period.
o Study your crosses. You will have a punnet square quiz today. I will also include
genetic vocabulary on this quiz (genotype, phenotype, trait, allele, etc…) as well as
examples of the different crosses (complete dominance, incomplete dominance,
codominance, etc…).
Tuesday (5/5/2009)
o Begin reading your next journal article. You will have a journal critique quiz on
Thursday.
Wednesday (5/6/2009)
o Study for your genetics test. The test will be today. Print the study guide that I placed on
my wikispace and look over the review PowerPoint presentation that I placed on-line.
o Hand in this packet at the beginning of class today.