PEDIGREES
A Pedigree Story
Affected Females
(Females with the trait)
Affected Males
(Males with the trait)
Unaffected Females
(Females withOUT the trait)
Unaffected Males
(males withOUT the trait)
Now draw the pedigree!
Questions
p. 74
Another Pedigree Story
Let's work this one out together
p. 75
Read the story below and construct a pedigree to show the 3 generations of the disease sickle cell anemia.
Label each circle or square with the family member’s name.
Madeline has a genetic disease called sickle cell anemia. She has two sisters and one brother. Her brother, Matthew, has
the same disease. Neither of her sisters, Martha and Monica, have it. Neither her mother, Mary-Kay nor her father, Jack,
had sickle cell disease. It is widely known, though, that Jack’s mother, Grandma Jill, did have sickle cell anemia. Grandpa
John was normal.
Answer the Questions!
Answer the Questions!
Pedigree Practice
1. Work independently to complete the
worksheet.
2. When you finish, you may check your
answers at the SSS
3. THEN, I will give you your STUDY GUIDE
Exit Ticket
• Clear everything off your desk.
• Let’s see how ready we are…
Happy Friday the 13th
• Today is a test day.
• PLACE YOUR CELL PHONE IN THE CUPS AT THE FRONT
• Complete BOTH SIDES of the genetics warm-up.
• It is DUE at 7:25.
• We will check answers.
#1
Tall is dominant to short in pea plants.
Cross a heterozygous tall pea plant with a short pea plant.
Key:
Tall=
Short =
Genotypes:
Phenotypes:
#2
There are 3 possible phenotypes for tulips: red, blue, and purple.
The gene for petal color is incompletely dominant.
Cross a purple tulip with a red tulip.
Key:
Red=
Blue=
Purple=
Genotypes:
Phenotypes:
#3
In cats, fur color is co-dominant.
Cross an orange cat with a black cat.
Key:
Orange=
Black=
Orange & Black=
Genotypes:
Phenotypes:
Pedigree Worksheet
Study Guide Time!
• Use your notes and/or textbook to answer all
the questions to prepare for your test
tomorrow.
• Must have a completed Study Guide before
you can take the test! It is due at 8:00
• We will check answers before the test.
• The Test will begin at 8:15
Test Time
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•
•
•
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Put your name at the top.
Mark all answers on your test booklet.
There are 30 questions.
Raise your hand if you have a question.
NO TALKING.