Transcript Mendel and Genetics

Cell Cycle Review
What happens to the DNA at the
beginning of prophase?
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It condenses into chromosomes
Unpaired sister chromatids
FIND YOUR SISTER
http://www.biotechnologyonline.gov.au/images/contentpages/chromosomes.jpg
http://www.stanford.edu/group/pandegroup/folding/education/GAH/chromosomes.jpg
http://www.sciencemuseum.org.uk/on-line/lifecycle/images/1-2-6-3-1-4-0-0-0-0-0.jpg
Chromosomes
http://www.cns.pdx.edu/~newmanl/chromosomeTid3.gif
Chromosomes
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Condensed chromosomes
without their sister chromatid
http://faculty.ksu.edu.sa/tatiah/Pictures%20Library/normal%20male%20karyotyping.jpg
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Sister chromatids joined by a
centromere with their homolog
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Find your partners by
finding your homolog
http://www.mun.ca/biology/scarr/Karyotype_Denver_system.jpg
Engage
Eagle Zone- Pick up the pages from the front
and begin working the first page (front and back)
with your partner
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Looking at Your Traits
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You and your groups will be looking at each
other to determine whether you are dominant or
recessive for the following traits.
Eagle Zone
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Today we will explore the principles of
dominance and recessiveness. In order to
do so, you must understand the following
terms:
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Dominant, recessive, genotype, phenotype
Using your own explanation, give the
meaning of these words (you should already have them
defined from your HMWK page)
Principle of
Dominance or Recessiveness
Traits found in humans
Tongue Rolling
Earlobes
Earbump
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Often called Darwin’s Ear Bump
Widow’s Peak
Hitchhiker’s Thumb
Polydactyly
Syndactyly Feet
Syndactyly Hands
Severe Syndactyly
Syndactyly Surgery
Cleft Chin
Clockwise Hair Whorl
Eagle Zone
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1. Get out vocabulary homework and the
review from last week. Place it in the
corner of your desk
2. Review for your quiz
10 minutes, then we will take the quiz
Explore/Explain
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Describing Your Traits
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Using the information provided, determine
your phenotype and genotype for the
identified traits.
Use the information in the binders to help you
answer the questions on the guided notes
page
We will discuss the questions in groups of 4
and then as a class
Eagle Zone
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Come in and continue working on your
Bug Lab with your partner. You will have
20 minutes to complete the lab when the
bell rings.
Elaborate
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Bugs, Bugs, Bugs
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Genes for traits are encoded and arranged linearly on
structures called chromosomes found in the nuclei of
most cells. When organisms reproduce, the resulting
offspring should receive an equal number of
chromosomes from the mother and the father.
In this activity you use the chromosomes and Bug
Traits Key to determine the genotype and phenotype
of the offspring.
Genetically Inherited Diseases
Autosomal Dominant and Recessive
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Huntington Disease – Dominant Disease
Cystic Fibrosis – Recessive Disease
Sickle Cell Anemia
Tay-Sach’s
PKU