Adaptation FIRST FIVE. In the deep sea, some fish have larger eyes than others. Fish with larger...
Transcript of Adaptation FIRST FIVE. In the deep sea, some fish have larger eyes than others. Fish with larger...
Adaptation FIRST FIVE.
In the deep sea, some fish have larger eyes than others. Fish with larger eyes can see better. There is very little light. Describe what caused the variation in
fish eye size. Describe the environmental pressure. Describe what will happen to the small-
eyed fish. Explain why.
Describe what will happen to the large-eyed fish. Explain why.
Catalyst What caused the variation in fish eye size?
A mutation caused the variation in eye size. What is the environmental pressure?
The environmental pressure is the amount of light.
Describe what will happen to the small-eyed fish. Explain why. The small-eyed fish will live a shorter life and
produce fewer offspring because they cannot see their predators or prey as well.
Describe what will happen to the large-eyed fish. Explain why. The large-eyed fish will have a longer life and
produce more offspring because they can see their food (prey) and their predators better.
In the deep sea, some fish have larger eyes than others. Fish with larger eyes can see better. There is very little light.
Agenda
Exit Question and Catalyst Review What Is an Adaptation? Is This an Adaptation? Planet Earth Exit Question
HOMEWORK: Adaptations worksheetSkittles Lab due Friday
(Answer ALL questions in COMPLETE SENTENCES!)
Objective
By the end of today, all SWBAT…
Describe whether or not a trait is an adaptation
Adaptation
Key Point #1: When mutations build up over many generations, they produce adaptations. Adaptations = Heritable traits that
increase an organism’s fitness in a specific environment.
Break It DownStop! Biology
time!!!
Heritable: passed on through genes; inherited from parents.
Key Point #2: To be an adaptation, a trait MUST be
heritable
Not all traits are heritable! Heritable traits: eye color, hair color, skin
color, height, hairiness Non-heritable traits: tattoos, favorite type of
music, hairstyle, learned knowledge
“Adaptations are heritable traits…”
Structural Adaptation(Physical features)
Bird Wing
Moth Coloring
Physiological Adaptations(Chemical production)
Secreting Slime
Making venomBioluminescence
Behavioral Adaptations
Migration is a voluntary behavior
Goosebumps is a reflex behavior
“…that increases an organism’s fitness…” Fitness: Ability of an organism to
survive and have children. Key Point #3:
To be an adaptation, a trait MUST increase fitness
“…in a specific environment.”
Whether or not a trait increases an organism’s fitness depends on the specific environment that it lives in.
DOES NOT INCREASE FITNESS
BECAUSE OF THE ENVIRONMENT.
The Point
Make a checklist. Is the trait… Heritable? Going to increase fitness in a specific
environment?
If your answer to either of these questions is “no,” then the trait is NOT AN ADAPTATION.
Example: Crocodile Teeth
Crocodiles have sharp, pointed teeth. The shape of their teeth is heritable. Having sharp, pointed teeth helps them
to survive in their specific environment.
So, it is an adaptation.
Non-Example: Favorite Food
Favorite food is not heritable. Your parents’ favorite food does not have
any bearing on your favorite food. Favorite food does not help you
survive. So, your favorite food is not an
adaptation.
Guided Practice (GP)
Trait Environment Heritable?
Inc. Fitness?
Adaptation?
Wolves develop thick fur
Taiga Yes Yes Yes
Wolves develop thick fur
Tropical forest Yes No No
Beetles burrow in dirt to avoid predators
Beach Yes Yes Yes
Bear learns that lots of fish are found in river
Coniferous forest No Yes No
Humans develop dark skin
Africa Yes Yes Yes
Scorpions develop ability to attack with poison
Desert Yes Yes Yes
Guided Practice (GP)
Trait Environment Heritable?
Inc. Fitness?
Adaptation?
Wolves develop thick fur
Taiga Yes Yes Yes
Wolves develop thick fur
Tropical forest Yes No No
Beetles burrow in dirt to avoid predators
Beach Yes Yes Yes
Bear learns that lots of fish are found in river
Coniferous forest No Yes No
Humans develop dark skin
Africa Yes Yes Yes
Scorpions develop ability to attack with poison
Desert Yes Yes Yes
Guided Practice (GP)
Trait Environment Heritable?
Inc. Fitness?
Adaptation?
Wolves develop thick fur
Taiga Yes
Wolves develop thick fur
Tropical forest Yes No No
Beetles burrow in dirt to avoid predators
Beach Yes Yes Yes
Bear learns that lots of fish are found in river
Coniferous forest No Yes No
Humans develop dark skin
Africa Yes Yes Yes
Scorpions develop ability to attack with poison
Desert Yes Yes Yes
Guided Practice (GP)
Trait Environment Heritable?
Inc. Fitness?
Adaptation?
Wolves develop thick fur
Taiga Yes Yes
Wolves develop thick fur
Tropical forest Yes No No
Beetles burrow in dirt to avoid predators
Beach Yes Yes Yes
Bear learns that lots of fish are found in river
Coniferous forest No Yes No
Humans develop dark skin
Africa Yes Yes Yes
Scorpions develop ability to attack with poison
Desert Yes Yes Yes
Guided Practice (GP)
Trait Environment Heritable?
Inc. Fitness?
Adaptation?
Wolves develop thick fur
Taiga Yes Yes Yes
Wolves develop thick fur
Tropical forest Yes No No
Beetles burrow in dirt to avoid predators
Beach Yes Yes Yes
Bear learns that lots of fish are found in river
Coniferous forest No Yes No
Humans develop dark skin
Africa Yes Yes Yes
Scorpions develop ability to attack with poison
Desert Yes Yes Yes
Guided Practice (GP)
Trait Environment Heritable?
Inc. Fitness?
Adaptation?
Wolves develop thick fur
Taiga Yes Yes Yes
Wolves develop thick fur
Tropical forest Yes No No
Beetles burrow in dirt to avoid predators
Beach Yes Yes Yes
Bear learns that lots of fish are found in river
Coniferous forest No Yes No
Humans develop dark skin
Africa Yes Yes Yes
Scorpions develop ability to attack with poison
Desert Yes Yes Yes
Guided Practice (GP)
Trait Environment Heritable?
Inc. Fitness?
Adaptation?
Wolves develop thick fur
Taiga Yes Yes Yes
Wolves develop thick fur
Tropical forest Yes
Beetles burrow in dirt to avoid predators
Beach Yes Yes Yes
Bear learns that lots of fish are found in river
Coniferous forest No Yes No
Humans develop dark skin
Africa Yes Yes Yes
Scorpions develop ability to attack with poison
Desert Yes Yes Yes
Guided Practice (GP)
Trait Environment Heritable?
Inc. Fitness?
Adaptation?
Wolves develop thick fur
Taiga Yes Yes Yes
Wolves develop thick fur
Tropical forest Yes No
Beetles burrow in dirt to avoid predators
Beach Yes Yes Yes
Bear learns that lots of fish are found in river
Coniferous forest No Yes No
Humans develop dark skin
Africa Yes Yes Yes
Scorpions develop ability to attack with poison
Desert Yes Yes Yes
Guided Practice (GP)
Trait Environment Heritable?
Inc. Fitness?
Adaptation?
Wolves develop thick fur
Taiga Yes Yes Yes
Wolves develop thick fur
Tropical forest Yes No No
Beetles burrow in dirt to avoid predators
Beach Yes Yes Yes
Bear learns that lots of fish are found in river
Coniferous forest No Yes No
Humans develop dark skin
Africa Yes Yes Yes
Scorpions develop ability to attack with poison
Desert Yes Yes Yes
Guided Practice (GP)
Trait Environment Heritable?
Inc. Fitness?
Adaptation?
Wolves develop thick fur
Taiga Yes Yes Yes
Wolves develop thick fur
Tropical forest Yes No No
Beetles burrow in dirt to avoid predators
Beach Yes Yes Yes
Bear learns that lots of fish are found in river
Coniferous forest No Yes No
Humans develop dark skin
Africa Yes Yes Yes
Scorpions develop ability to attack with poison
Desert Yes Yes Yes
Guided Practice (GP)
Trait Environment Heritable?
Inc. Fitness?
Adaptation?
Wolves develop thick fur
Taiga Yes Yes Yes
Wolves develop thick fur
Tropical forest Yes No No
Beetles burrow in dirt to avoid predators
Beach Yes
Bear learns that lots of fish are found in river
Coniferous forest No Yes No
Humans develop dark skin
Africa Yes Yes Yes
Scorpions develop ability to attack with poison
Desert Yes Yes Yes
Guided Practice (GP)
Trait Environment Heritable?
Inc. Fitness?
Adaptation?
Wolves develop thick fur
Taiga Yes Yes Yes
Wolves develop thick fur
Tropical forest Yes No No
Beetles burrow in dirt to avoid predators
Beach Yes Yes
Bear learns that lots of fish are found in river
Coniferous forest No Yes No
Humans develop dark skin
Africa Yes Yes Yes
Scorpions develop ability to attack with poison
Desert Yes Yes Yes
Guided Practice (GP)
Trait Environment Heritable?
Inc. Fitness?
Adaptation?
Wolves develop thick fur
Taiga Yes Yes Yes
Wolves develop thick fur
Tropical forest Yes No No
Beetles burrow in dirt to avoid predators
Beach Yes Yes Yes
Bear learns that lots of fish are found in river
Coniferous forest No Yes No
Humans develop dark skin
Africa Yes Yes Yes
Scorpions develop ability to attack with poison
Desert Yes Yes Yes
Guided Practice (GP)
Trait Environment Heritable?
Inc. Fitness?
Adaptation?
Wolves develop thick fur
Taiga Yes Yes Yes
Wolves develop thick fur
Tropical forest Yes No No
Beetles burrow in dirt to avoid predators
Beach Yes Yes Yes
Bear learns that lots of fish are found in river
Coniferous forest No Yes No
Humans develop dark skin
Africa Yes Yes Yes
Scorpions develop ability to attack with poison
Desert Yes Yes Yes
Guided Practice (GP)
Trait Environment Heritable?
Inc. Fitness?
Adaptation?
Wolves develop thick fur
Taiga Yes Yes Yes
Wolves develop thick fur
Tropical forest Yes No No
Beetles burrow in dirt to avoid predators
Beach Yes Yes Yes
Bear learns that lots of fish are found in river
Coniferous forest No
Humans develop dark skin
Africa Yes Yes Yes
Scorpions develop ability to attack with poison
Desert Yes Yes Yes
Guided Practice (GP)
Trait Environment Heritable?
Inc. Fitness?
Adaptation?
Wolves develop thick fur
Taiga Yes Yes Yes
Wolves develop thick fur
Tropical forest Yes No No
Beetles burrow in dirt to avoid predators
Beach Yes Yes Yes
Bear learns that lots of fish are found in river
Coniferous forest No Yes
Humans develop dark skin
Africa Yes Yes Yes
Scorpions develop ability to attack with poison
Desert Yes Yes Yes
Guided Practice (GP)
Trait Environment Heritable?
Inc. Fitness?
Adaptation?
Wolves develop thick fur
Taiga Yes Yes Yes
Wolves develop thick fur
Tropical forest Yes No No
Beetles burrow in dirt to avoid predators
Beach Yes Yes Yes
Bear learns that lots of fish are found in river
Coniferous forest No Yes No
Humans develop dark skin
Africa Yes Yes Yes
Scorpions develop ability to attack with poison
Desert Yes Yes Yes
Guided Practice (GP)
Trait Environment Heritable?
Inc. Fitness?
Adaptation?
Wolves develop thick fur
Taiga Yes Yes Yes
Wolves develop thick fur
Tropical forest Yes No No
Beetles burrow in dirt to avoid predators
Beach Yes Yes Yes
Bear learns that lots of fish are found in river
Coniferous forest No Yes No
Humans develop dark skin
Africa Yes Yes Yes
Scorpions develop ability to attack with poison
Desert Yes Yes Yes
Guided Practice (GP)
Trait Environment Heritable?
Inc. Fitness?
Adaptation?
Wolves develop thick fur
Taiga Yes Yes Yes
Wolves develop thick fur
Tropical forest Yes No No
Beetles burrow in dirt to avoid predators
Beach Yes Yes Yes
Bear learns that lots of fish are found in river
Coniferous forest No Yes No
Humans develop dark skin
Africa Yes
Scorpions develop ability to attack with poison
Desert Yes Yes Yes
Guided Practice (GP)
Trait Environment Heritable?
Inc. Fitness?
Adaptation?
Wolves develop thick fur
Taiga Yes Yes Yes
Wolves develop thick fur
Tropical forest Yes No No
Beetles burrow in dirt to avoid predators
Beach Yes Yes Yes
Bear learns that lots of fish are found in river
Coniferous forest No Yes No
Humans develop dark skin
Africa Yes Yes
Scorpions develop ability to attack with poison
Desert Yes Yes Yes
Guided Practice (GP)
Trait Environment Heritable?
Inc. Fitness?
Adaptation?
Wolves develop thick fur
Taiga Yes Yes Yes
Wolves develop thick fur
Tropical forest Yes No No
Beetles burrow in dirt to avoid predators
Beach Yes Yes Yes
Bear learns that lots of fish are found in river
Coniferous forest No Yes No
Humans develop dark skin
Africa Yes Yes Yes
Scorpions develop ability to attack with poison
Desert Yes Yes Yes
Guided Practice (GP)
Trait Environment Heritable?
Inc. Fitness?
Adaptation?
Wolves develop thick fur
Taiga Yes Yes Yes
Wolves develop thick fur
Tropical forest Yes No No
Beetles burrow in dirt to avoid predators
Beach Yes Yes Yes
Bear learns that lots of fish are found in river
Coniferous forest No Yes No
Humans develop dark skin
Africa Yes Yes Yes
Scorpions develop ability to attack with poison
Desert Yes Yes Yes
Guided Practice (GP)
Trait Environment Heritable?
Inc. Fitness?
Adaptation?
Wolves develop thick fur
Taiga Yes Yes Yes
Wolves develop thick fur
Tropical forest Yes No No
Beetles burrow in dirt to avoid predators
Beach Yes Yes Yes
Bear learns that lots of fish are found in river
Coniferous forest No Yes No
Humans develop dark skin
Africa Yes Yes Yes
Scorpions develop ability to attack with poison
Desert Yes
Guided Practice (GP)
Trait Environment Heritable?
Inc. Fitness?
Adaptation?
Wolves develop thick fur
Taiga Yes Yes Yes
Wolves develop thick fur
Tropical forest Yes No No
Beetles burrow in dirt to avoid predators
Beach Yes Yes Yes
Bear learns that lots of fish are found in river
Coniferous forest No Yes No
Humans develop dark skin
Africa Yes Yes Yes
Scorpions develop ability to attack with poison
Desert Yes Yes
Guided Practice (GP)
Trait Environment Heritable?
Inc. Fitness?
Adaptation?
Wolves develop thick fur
Taiga Yes Yes Yes
Wolves develop thick fur
Tropical forest Yes No No
Beetles burrow in dirt to avoid predators
Beach Yes Yes Yes
Bear learns that lots of fish are found in river
Coniferous forest No Yes No
Humans develop dark skin
Africa Yes Yes Yes
Scorpions develop ability to attack with poison
Desert Yes Yes Yes
Independent Practice
We’re going to watch clips from Planet Earth.
(Hooray, movies!!! Get it, Ms. S!)
Exit Question
Polar bears have thick, white fur.1. Is this trait heritable?2. Does this trait increase polar bears’
fitness in the specific environment that they live in?
If yes, HOW? If no, WHY NOT?
3. Is this trait an adaptation? Explain how you know.
Write in complete sentences!
Don’t talk during the Exit Question!