Cell Cycle Review

What happens to the DNA at the beginning of prophase?

It condenses into chromosomes Unpaired sister chromatids

FIND YOUR SISTER

http://www.stanford.edu/group/pandegroup/folding/education/GAH/chromosomes.jpghttp://www.biotechnologyonline.gov.au/images/contentpages/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 Condensed chromosomes

without their sister chromatid

Sister chromatids joined by a centromere with their homolog

Find your partners by finding your homolog

http://faculty.ksu.edu.sa/tatiah/Pictures%20Library/normal%20male%20karyotyping.jpg 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

Looking at Your Traits You and your groups will be looking at each other

to determine whether you are dominant or recessive for the following traits.

Eagle Zone Today we will explore the principles of

dominance and recessiveness. In order to do so, you must understand the following terms: 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 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 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 Describing Your Traits

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 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 Bugs, Bugs, Bugs

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 DiseasesAutosomal Dominant and Recessive Huntington Disease – Dominant Disease Cystic Fibrosis – Recessive Disease

Sickle Cell Anemia

Tay-Sach’s

PKU