EOU Exam on Thursday, May 1st

Lesson #8:

Chromosomes, DNA and Genes

Learning Intention:

Students will be able to explain how chromosomes, DNA, and genes are related, and describe how they determine traits.

Success Criteria:

I am successful when I can...

Question and discuss how traits are inherited and explore their initial understanding of how characteristics are passed through generations.
Define and describe chromosomes, DNA, and genes, explaining the structural and functional relationships among these components.
Apply their understanding of chromosomes, DNA, and genes to explain genetic variation, answering critical-thinking questions that deepen my understanding.
Demonstrate understanding by correctly responding to assessment questions that require explaining the connections among chromosomes, DNA, genes, and traits.

Reminders:

1) Parent teacher conference March 20th and 21st.

2) End of Unit exam on reproduction this Thursday, March 13th.

3) CER Homework will be collected at the end of the period.

Standards

HS-LS3-1: Ask questions to clarify relationships about the role of DNA and chromosomes in coding the instructions for characteristic traits passed from parents to offspring.

Part 1: Warm-Up

Spot the Difference

Directions:

Step 1) Read both student responses to the question below.

Step 2) In your journals, write which one is incorrect and in detail, why it is incorrect.

Base your answers to the questions on the information below and on your knowledge of biology.

Placental mammals—as opposed to the kind that lay eggs, such as the platypus, or carry young in pouches, such as the kangaroo—are an extraordinarily diverse group of animals with more than 5000 species today. They [placental mammals] include examples that fly, swim, and run, and range in weight from a couple of grams to hundreds of tons....

Source: “Earliest Placental Mammal Ancestor

Pinpointed,” BBC News, February 7, 2013.

Describe one advantage for an offspring to develop internally as opposed to developing externally.

Student A

An advantage for offspring developing internally is that they can get food by hunting and eating right away after birth because they are already developed enough. Internal development means they learn survival skills faster and can immediately protect themselves from predators.

Student B

An advantage for offspring developing internally is that the mother’s body provides protection and nutrients, allowing the offspring to develop safely. This protects the offspring from external dangers such as predators, environmental hazards, and temperature changes, increasing its chance of survival.

Part 2: Stop n' Jot

Pre-Teach Vocabulary

Chromosome: A structure made of DNA and protein found in the nucleus, carrying genetic information

DNA: Molecule containing genetic instructions for life.

Gene: A piece of DNA coding for a specific trait.

Trait: A characteristic of an organism determined by genes.

Part 3:

TNT x 3

This is my son Ben.

How did Ben develop from a zygote into an infant?

Turn n' Talk x2

This is my son Ben.

How did Ben develop from a zygote into an infant?

Tier 2

(Non-Specific Vocabulary)

DOUBLE

DIVIDE

IDENTICAL

COMPLETE

HALF

Tier 3

(Biology Vocab)

ZYGOTE

MITOSIS

CELL DIVISION

CHROMOSOMES

DNA

GENES

IMPLANTATION

Turn n' Talk x3

This is my son Ben.

How did Ben develop from a zygote into an infant?

Use the conjunctions although, while and if

Tier 2

(Non-Specific Vocabulary)

DOUBLE

DIVIDE

IDENTICAL

COMPLETE

HALF

TRAIT

Tier 3

(Biology Vocab)

ZYGOTE

MITOSIS

CELL DIVISION

CHROMOSOMES

DNA

IMPLANTATION

Part 4:

Active Reading

Lesson 8: Chromosomes, DNA and Genes

According to the article, what role do genes play in determining traits like eye color and hair type?

Unseen

Explain how genetic variations in DNA can lead to differences in traits among individuals. Use your understanding of how genes function to support your response.

Part 5:

Exit Ticket

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