Heredity

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Teaching project #2 Final project **blood typing?? Heredity

he·red·i·tary

adjective \ hə-ˈre-də-ˌter-ē\

Definition of HEREDITARY

1

a: genetically transmitted or transmittable from parent to offspring

“The passing on of traits from parents to child is the basis of heredity” Genes give instructions through a combination/ code that tells certain proteins to be made which result in a specific trait. Genes are contained within DNA and DNA makes up the chromosomes in the body ****need a picture: gene>DNA>chromosome*** Enviornment can affect the expression of the trait, for an example sunlight or chemicals when applied to the hair can cause the hair to become lighter than the original genetic

<trait?>. Parents pass genes to child through their chromosomes. Each parent contributes 23 chromosomes thereby resulting in a child with 46 chromosomes, 23x2=46. Normal body cells (somatic) have 46 chromosomes, but the sex cells (gamete) have half that number, 23 chromosomes. Show movie: http://learn.genetics.utah.edu/content/begin/traits/tour_heredity.html http://learn.genetics.utah.edu/content/begin/traits/tour_heredity.html

What is a trait? Slideshow http://learn.genetics.utah.edu/content/begin/traits/tour_trait.html

What is a chromosome? Movie/slide show http://learn.genetics.utah.edu/content/begin/traits/tour_chromosome.html

How do scientists read chromosomes article: http://learn.genetics.utah.edu/content/begin/traits/scientists/

****use Prezi for Demo***

Observable traits:

http://learn.genetics.utah.edu/content/begin/traits/images/earlobes.jpg

http://www.google.com/imgres?um=1&hl=en&sa=N&tbo=d&rlz=1T4ADRA_enUS453US456&biw=1214

&bih=521&tbm=isch&tbnid=cbQchiOLwJ6PJM:&imgrefurl=http://www.youtube.com/channel/HC6nifs8 ugZYI&docid=ZSCd6zKd8cw6mM&imgurl=http://i2.ytimg.com/vi/eEUvRrhmcxM/mqdefault.jpg&w=320

&h=180&ei=H6GrUKHoMeXIigL274C4CQ&zoom=1&iact=rc&dur=172&sig=101999858358111163040&p age=2&tbnh=133&tbnw=244&start=14&ndsp=20&ved=1t:429,r:16,s:0,i:135&tx=98&ty=82

Gregor Mendel’s brilliant experiments in the mid-1800s revealed the basic patterns by which traits are passed from parents to offspring. He discovered that hereditary determinants (genes) are discrete entities that do not blend in offspring; that genes come in different forms (e.g., dominant or recessive); and that genes pass from parent to offspring according to the laws of probability. In this activity, y ou’ll use a Punnett square and the principles of

Mendelian genetics to predict the types of gametes and offspring that are produced from crossing pea plants with different traits.

http://wps.prenhall.com/esm_freeman_biosci_1/7/1948/498846.cw/index.html

http://www.uwyo.edu/vetsci/courses/patb_4110/4-6/class_notes.htm

http://www.uwyo.edu/vetsci/courses/patb_4110/4-6/class_notes.htm

Blood typing http://learn.genetics.utah.edu/content/begin/traits/blood/

PTC: genes and bitter taste http://learn.genetics.utah.edu/content/begin/traits/ptc/

QUESTIONS:

Fill in the blank:

1.

Heredity:____ passing traits from parents to offspring

2.

Recessive trait:_____ a trait that disappeared in the 1 st generation and reappeared in the 2 nd in

Mendel’s experiments

3.

Cross: _____traits from two parents are placed together to determine the traits of their offspring

4.

Trait: ____different forms of a physical characteristic

5.

Dominant trait: _____a trait that appeared in the 1 st and 2 nd generations in Mendel’s experiements

6.

Genetics: _____the scientific study of heredity

Comparisons:

1.

(r or d): Dominant:____Takes over, Recessive:____hides

2.

(g or h): Genetics:___Study passing traits, Heredity:___Passing traits

3.

(a or g): Gene:___pair, Allele:____single

MATCHING??

Caluclations:

Determine the probability of receiving an allele for light eyes (d) for each parent:

Dd parent, DD parent, dd parent % and punent square

Instructional Objective

State Standard

Technology Standard(s) iPad Application

Materials Needed

Technology Needed

Anticipatory Set

Comprehensive Input

Modeling

Multi-level Questions

Guided Practice

Independent Practice

Closure

Students will have knowledge of heredity and how dominant and recessive traits are passed from parents to children

Strand 4: Life Science concept 2: Reproductive and

Heredity, PO#3 Distinguish between the nature of dominant and recessive traits

Strand 1: Creativity and innovation: concept 1: knowledge and ideas: use technology to generate knowledge and new ideas

Chalkboard app for drawing the Punnet square

Internet, labtop, smart board, iPad

Movie clip about Heredity from website, prezi slideshow,

Watch movie clip, lecture/prezi, practice problems

Allow students to draw Punnent square problems on their iPad and tell the answers they calculated.

Teach about Punnent square

Ask the questions from the quiz (have handouts for students)

Solving the punent square with class explaining it on the smart board

Have students solve the punnent square on the iPad

Review over the lesson and ask questions fo assess comprehension of the material

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