Warm up: 1. What is heredity? 2. Compare and contrast dominant and recessive traits. 3. On your smiley face, were any of your traits recessive? dominant.

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Presentation transcript:

Warm up: 1. What is heredity? 2. Compare and contrast dominant and recessive traits. 3. On your smiley face, were any of your traits recessive? dominant from both parents?

QUICK CHECK!!!!!

Introduction to Genetics

We learned chromosomes contain genes and that genes are instructions to make proteins These control all our traits Gene tics is the study of heredity!

Alleles are the different variations of traits Most traits have 2 or more different alleles

If an organism has 2 of the same allele for a trait, it is called homozygous If an organism has 2 different alleles for a trait, it is called heterozygous

The 2 alleles an organism inherits are called its genotype (the genes the organism has) The way a genotype looks is called the phenotype

Scientists can predict genotypes using a Punnett square

In purple people eaters, one-horn is dominant (HH or Hh) and no horn is recessive (hh). Draw a Punnett square showing the cross of an un-horned purple people eater with a heterozygous purple people eater.

When the alleles are the same, the organism is a purebred. If the alleles are different, the organism is hybrid.

Warm up: 1. Complete the Punnett square below: T t T t T=tan color t=blue color Genotype(s): Phenotype(s):

Complete the Inheritance Gizmo Classcode: 2E2VQZQBGJ If time remains, work on your chapter 3 review

Exit: How do offspring of parents who use sexual reproduction differ from offspring of a parent who uses asexual reproduction?

Warm up: 1. Read the article. 2. Using the context of the article and the textbook, What is a mutation? 3. Why do researchers think people have blue eyes? 4. Are mutations good, bad, or neither? Explain.

Complete Bikini Bottom Genetics with your partner.

heterozygous homozygou s Purebred or hybrid TT xP Tt xh Ff xh bb xP Dd xh FF xP

GenotypePhenotype YYyellow Yyyellow yyblue SSsquare Sssquare ssround

PhenotypePossible Genotypes Tall headTT Tt Short headtt Pink bodyPP Pp Yellow body pp

SSSs ss S s S s

Genotype(s): Phenotype(s):

Warm up: 1. What are mutations? 2. Compare and contrast genotype and phenotype.

So...what can happen because of genetics? Read the peppered moth article and answer the questions. Put your answers in the basket when you are finished.

Now...play the Peppered Moth simulation and see it in action! Link is on Cells and Heredity Chapter 3

Decorate your moths with the best "mutations" you can come up with; we will see who survives!!!!!!!!!!

Warm up: 1. What is the difference between a mutation and a variation? 2. How could the environment influence the diversity of a species (variation-hint peppered moth???)?

Warm up: 1. What is the difference between a mutation and a variation? 2. How could the environment influence the diversity of a species (variation-hint peppered moth???)?

Slide 1: Title and partner name(s) Slide 2: What is cloning? Slide 3: Pros Slide 4: Cons Slide 5: Your supported opinion You will be presenting your slides in class

Warm up TAKE OUT YOUR REVIEW SHEET FOR CHAPTER 3 1. What is the difference between heterozygous and homozygous? 2. What are alleles?

Now Review Sheet 2. Quick Check 3. Cloning Work

Slide 1: Title and partner name(s) Slide 2: What is cloning? Slide 3: Pros Slide 4: Cons Slide 5: Your supported opinion You will be presenting your slides in class

Slide 1: Title and partner name(s) Slide 2: What is cloning? Slide 3: Pros Slide 4: Cons Slide 5: Your supported opinion You will be presenting your slides in class

Warm up: Slide 1: Title and partner name(s) Slide 2: What is cloning? Slide 3: Pros Slide 4: Cons Slide 5: Your supported opinion Presentations begin in 15 minutes