Upload
all-saints-science
View
2.572
Download
3
Tags:
Embed Size (px)
Citation preview
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
04/12/23 12
Four More! How do species change?Your Own Key Idea: Your Own Key Idea:
*
*
Your Own Key Idea:Your Own Key Idea:
*
*
Classmate’s Key Idea: Classmate’s Key Idea:
*
*
Classmate’s Key Idea: Classmate’s Key Idea:
*
*
Classmate’s Key Idea: Classmate’s Key Idea:
*
*
Classmate’s Key Idea: Classmate’s Key Idea:
*
*
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