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. You also should respond to the discussion postings on
my wiki. In order to receive full credit you will need to post at least 12 responses for this unit.
Refer to the “guidelines for posting discussion responses” that I gave you at the beginning of the
semester for my expectations. This packet will be due on the day of the exam.
Friday (12/4/2009)
o Print the “Genetics KWL” from my wiki and fill in 10 facts in the Know section and 10
questions in the Want to know section. Hand in this worksheet at the beginning of class
today.
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.
Name: ____________________
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.
o Discussion Thread: The man, the myth, the legend…
Monday (12/7/2009)
o Your rough draft of the journal critique is due today. If you stopped in to see me prior to
today I will mark up your rough draft to prepare you for the final draft that is due on
Friday.
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.
o Discussion Thread: The reality of Jurassic Park
Tuesday (12/8/2009)
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?
o Discussion Thread: Dominant, but not prevalent? Exceptions to the norm.
Name: ____________________
Wednesday (12/9/2009)
o Finish the dihybrid crosses that we began today in class. Make sure to follow my way of
conducting these crosses. I will check your progress at the beginning of class today.
o Read section 11.3 of your textbook and answer the following question:
 Describe the following scenarios. Use an example to illustrate each of your
answers:
 Incomplete Dominance:

Codominance:

Multiple Alleles:

Polygenic Traits:
Thursday (12/10/2009)
o Finish the blood type crosses that we began today during class. Hand in your entire
packet of crosses at the beginning of class today.
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 “Blood Type” worksheet found on my wikispace and hand this worksheet
in at the beginning of class.
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…).
o Discussion Thread: An example of epistasis in humans
o Discussion Thread: An example of pleiotropy in humans
o Discussion Thread: What would you do?
Friday (12/11/2009)
o Hand in your final draft of the journal critique at the beginning of the block. Staple the
signed revision sheet to your summary and critique.
o Complete the “Antagonistic Pleiotropy” worksheet that is found on my wikispace. Do
not hand in this assignment. I will check it at the beginning of the block.
o Discussion Thread: Antagonistic Pleiotropy and Evolution – Why do we really age?
Monday (12/14/2009)
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 block today.