Principio del formulario
* 2nd Partial project Guidelines
Publicado en: sábado 12 de noviembre de 2011
A FAMILY PORTRAIT
In the Chapter 4 Project, you will create pedigrees and a family album to show
the inheritance patterns of two traits in an imaginary family. The project rules
below outlinethe tasks you must complete to achieve this goal. The project hints
that follow provide additional guidelines and tips for carrying through each task.
1. Choose two traits and identify their patterns of inheritance.
2. Create a pedigree for an imaginary family. You must show a couple with five
children. Some or all of these children must have children of their own.
3. Usethe pedigree to show the inheritance pattern of each of the two traits.
4. Create a family album for the imaginary family that shows the phenotypes of
5. Share your pedigrees and family album with the class.
Hints for Choosing Traits
1. The two traits you choose for the Chapter 4 Project should be traits controlled
by a single gene. .
2. In deciding which two traits torepresent in your pedigree, think about how you
would show each trait in a family album. Visible traits, such as widow’s peak or
cleft chin, are easy to show in pictures, whereas nonvisible traits, such as
hemophilia or colorblindness, will have to be represented in some other way.
3. Also take into account that sex-linked traits are more difficult to work with,
because you must considertheir sex when deciding whether or not people
have the traits.
Hints for Making and Using Pedigrees
1. Do the Chapter 4 Project Worksheet 1 before you create your own pedigree. We will review it in class.
This will give you practice interpreting and using standard pedigree symbols.
You also should study Exploring a Pedigree on page 124 of your text.
2. When you create the pedigree for yourimaginary family, remember to include five
children in the second generation and to show at least three generations altogether.
3. After you complete your basic pedigree, including names and sexes but not
traits, have your teacher check your work. Then make any necessary changes. I will be asking to check the progress of your project in different days, Look at the project timeline included inthis announcement.
( You must check your pedigree for errors first. Ask the teacher for help if you need it! )
1. Either trace or photocopy your basic pedigree so you will have a copy to use for
each trait. You may also want to make extra copies in case you make mistakes.
2. To show the inheritance of traits in your pedigree, follow the steps outlined on
Chapter 4Project Worksheet 2.
3. Use shading to show the genotypes of the individuals in the pedigree. Usually
the whole symbol is shaded if the individual has the trait being traced, half the
symbol is shaded if the individual is a carrier of the trait, and no shading is
used if the individual does not have the trait and is not a carrier. Be sure to
include a key to show how each genotype is represented. Creating Family Albums and Presenting the Project
1. The family album you create should show the phenotypes of the individuals in
each generation of the pedigree. If you do not use a picture for every family
member, make sure that you at least represent each phenotype.
2. You may want to clip pictures from newspapers or magazines or use drawings
of your own. The pictures can be arrangedchronologically in a standard photo
album or around the outside of the pedigree on a sheet of poster board.
3. Instead of using pictures to create a family album, you could use imaginary
letters, written anecdotes, newspaper articles, or similar materials to create a
family scrapbook. For example, you might write a newspaper article about a
medical story or a health-related fund raiser. A...