MONDAY:Who are my parents and why?Answer on green do-now log.

Oct. 10th 2011

Welcome 7th GradersMr.

Martell 506

Mom?

Dad?

You need:Composition Book4 HandoutsQwizdom Remote (off)

1 2 3

1 2 3

Offspring

Oct. 10th 2011

Today’s ScheduleMr.

Martell 506

1. Do-Now

2. Recap of last week

3. Reading on inheritance

4. Define Genotype, Phenotype,

Dominant, and Recessive

5. Exit Ticket Quiz

DNA poster due Wed/Thur

Homework is due Friday

Dark MatterEssential Questions

What creates diversity among offspring?

Oct. 10th 2011

ReadingMr.

Martell 506

1. Individually read the paper and answer the questions on the front and back.

2. Compare your answers with you’re the person sitting at your table

3. Generate definitions for the 4 words below and write them in your composition book on page 2-6.1. Genotype2. Phenotype3. Dominant trait/allele4. Recessive trait/allele

Oct. 10th 2011

ReadingMr.

Martell 506

R r rR

Dominant Allele: No running (R)Recessive Allele: Running (r)

r rR R R r

or

Oct. 10th 2011

Vocabulary Mr.

Martell 506

Dominant Trait

A trait that is able to mask or cover the affects a recessive gene

Rr

Oct. 10th 2011

Vocabulary Mr.

Martell 506

Recessive Trait

A trait that is only expressed when two copies are present.

Rr

Oct. 10th 2011

Vocabulary Mr.

Martell 506

Phenotype

An organism’s observable characteristics or traits

Oct. 10th 2011

Vocabulary Mr.

Martell 506

Genotype

BbDominant alleleRecessive allele

Oct. 10th 2011

Exit Ticket Mr.

Martell 506

Question 1:

The allele for freckles is (F), while the allele is for no freckles is (f). Using this information, you can infer that…

A) No freckles is a dominant traitB) Freckles is a dominant traitC) People with the ff genotype

will show frecklesD) People with the Ff will show

freckles

Oct. 10th 2011

Exit Ticket Mr.

Martell 506

Question 2:

The allele for freckles is (F), while the allele is for no freckles is (f). What is the phenotype for person with the genotype, Ff.

A) No frecklesB) FFC) FrecklesD) Ff

Oct. 11 & 12th

2011

Welcome 7th GradersMr.

Martell 506

Given the phenotype of the fruit fly, predict the fly’s possible genotypes:

Phenotype: Curly wings, white eyes, tan body.

Genotype: ?Dominant Recessive

Wings A = curly a=straightEye Color R = red r = whiteBody Color B = tan b = yellow

Oct. 10th 2011

Today’s ScheduleMr.

Martell 506

1. Do-Now

2. Define homozygous, heterozygous, and allele

3. Investigation

4. Exit ticket

Homework and Poster is due Friday

Dark Matter

Essential Questions

What creates diversity among offspring?

How are the structures in genetics related?

Oct. 11 & 12th

2011

Homozygous vs. Heterozygous Mr.

Martell 506

Phenotype: Curly wings, white eyes, tan body.

Possible Genotype:

AA, rr, BB

AA, rr, Bb

Aa, rr, BB

Aa, rr, Bb

Dominant RecessiveWings A = curly a=straightEye Color R = red r = whiteBody Color B = tan b = yellow

How is this genotype different than the others?

Oct. 11 & 12th

2011

Homozygous vs. Heterozygous Mr.

Martell 506

Allele: a version of one geneExample: curly wing allele = AExample: straight wing allele = a

Homozygous: having identical alleles or versions of a gene for a traitExample: Homozygous Dominant (AA)Example: Homozygous Recessive (aa)

Heterozygous: having different alleles or versions of a gene for a traitExample: Heterozygous (Aa)

“Homo” = Same

“Hetero” = Different

Oct. 11 & 12th

2011

Homozygous vs. Heterozygous Mr.

Martell 506

Review the handout from yesterday and classify each genotypes as….

1) Homozygous dominant2) Homozygous recessive3) Heterozygous

Oct. 11 & 12th

2011

InvestigationMr.

Martell 506

Pg 2-7 Pg 2-8

1. Glue the investigation handouts into your composition book. 2. Read introduction and answer pre-lab questions

Oct. 11 & 12th

2011

Investigation: Sexual ReproductionMr.

Martell 506

1. Each partner will get a nucleus (plastic cup) with two chromosomes (popsicle sticks).

2. Close your eyes and randomly pick one chromosome to pass down to your offspring.

3. Record the genotype and phenotype on your handout.

4. Add the traits to your fruit fly cut out and place on wall next to similar flies.

5. Repeat until you have data for 4 offspring

MaleNucleus

Chromosomes

FemaleNucleus

OffspringNucleus

Oct. 11 & 12th

2011

Investigation: Asexual ReproductionMr.

Martell 506

1. Close your eyes and select both chromosomes from the female’s nucleus and place them in the offspring nucleus.

3. Record the genotype and phenotype on your handout.

4. Add the traits to your fruit fly cut out and place on wall next to similar flies.

5. Repeat until you have data for 2 offspring

FemaleNucleus

OffspringNucleus

Oct. 11 & 12th

2011

Investigation: ConclusionMr.

Martell 506

Pg 2-9

Answer the questions below using complete sentences.

1) Compare the offspring made by sexual reproduction and asexual reproduction.

2) Explain why the offspring made by sexual reproduction differ from asexual reproduction.

3) Imagine a virus infects both populations of offspring and kills only red eyed flies. Which population of offspring is most likely to survive: the population of sexually or asexually reproducing flies? Explain your answer.

Conclusion Questions

Oct. 11 & 12th

2011

BrainPop: Asexual ReproductionMr.

Martell 506