Ch. 6 Lesson 2How do species

change?

heredity• process in which plants & animals receive (inherit) ½ their genes from each parent

Heredity and Traits website

• genes determine almost everything about how organisms grow

ecosystem can cause differences in organisms

hydrangea

mutation• change in an organism’s gene that

can be passed from parent offspring

• can be helpful, harmful or neutral

http://www.echalk.co.uk/ - Peppered Moth

harmful changegene mutates helpful change adaptation

Video clip-Mutations

structural adaptation

• changed body part that helps organism survive

behavioral adaptation

• inherited behavior that help animals survive

Structural (Physical) and Behavioral Adaptations Video Clip

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Four More! How do species change?Your Own Key Idea: Your Own Key Idea:

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Your Own Key Idea:Your Own Key Idea:

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Classmate’s Key Idea: Classmate’s Key Idea:

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Classmate’s Key Idea: Classmate’s Key Idea:

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Classmate’s Key Idea: Classmate’s Key Idea:

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Draw a picture of a structural adaptation & a behavioral adaptation.

Write a sentence describing your picture, underline the adaptation.

structural adaptation-

A giraffe uses its long neck to reach leaves in trees.

The moth turning black when the lichen turned dark.

Mutation is a change in an animal’s genes.

A giraffe’s neck grew over time-structural adaptation

Cat with 6 toes is a mutation-neutral

Behavior adaptation is an instinct.

Structural adaptation has to learn.

Behavioral adaptation-hummingbird’s long beak

Behavioral adaptation when parent has to teach something

Behavioral adaptation-when you are born with it

Animals that live in caves are mostly blind.

Moth gets black (adaptations)-change in organism’s genes

Genes-you get them from your parents

The pepper moth gets black if smokes on it

When an animal changes color to parents’ genes

Structural adaptation-the hummingbird body parts