adaptation and natural selection - ms....
TRANSCRIPT
Adaptation and Natural Selection
Tuesday, April 5th 2016
Tuesday April 5th 2016
O WARM-UP
O Find your new seat.
O Turn in textbook for a sticker (if you have not
done so already)
O TODAY IN SCIENCE
O Quarter #4 Business (hallway and homework
tickets)
O Notes, Human Thumbs, and Hungry Birds!
Taking Care of Business
O Tape or paper clip hallway and homework
tickets to science notebook.
O Update Table of Contents
O Glue Notes from yesterday into page #101
O Glue Human Thumb Lab into page #99 (if
you have not done so already)
Variation
O Within a species there are natural
differences in traits, or VARIATIONS.
O In other words, you might see slight
differences in individuals.
Mutation
O Many differences among individuals result
from differences in genetic material.
O Sometimes genetic material itself changes,
causing variations to come about. A change
in genetic material is referred to as a
MUTATION.
O As the organism with a new variation
reproduces, the trait gets passed on to its
offspring.
Adaptation
O ADAPTATION
O a characteristic, a behavior, or an inherited
trait that makes a species able to survive and
reproduce in a particular environment.
Adaptation
O What are some adaptations of this mountain
goat?
Human Thumb Lab
O Complete at least three tasks “thumbs free”
and “thumbs taped”.
O When finished answer the conclusion
questions on page #100.
Natural Selection
O Individual organisms with a particular
adaptation are most likely to survive long
enough to reproduce.
O As a result, the adaptation become more
common in the next generation of the
offspring.
O As this process repeats from generation to
generation, more members of the species
show the adaptation.
Hungry Birds
1. Get your iPad.
2. Find the iPad App “Hungry Birds” in the Life Science Folder.
3. Play two rounds of the game.
4. Record the data from your two games on the data sheet.
5. Click on “Learn More”.
6. When finished put away iPad and answer the Hungry Birds questions.
Speciation
O SPECIATION is the evolution of new species
from an existing species.
O Speciation may occur when the environment
changes dramatically, or when the
environment changes gradually.
Change Over Time
O EVOLUTION is the process through which
species change over time; can refer to the
changes in a particular population or to the
formation and extinction of species over the
course of Earth’s history.
https://www.youtube.com/watch?v=mZt1Gn0
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Work Time
1. Human Thumb LabO Complete at least three tasks “thumbs free” and “thumbs
taped”.
O When finished answer the conclusion questions on page #100.
2. Hungry BirdsO Get your iPad.
O Find the iPad App “Hungry Birds” in the Life Science Folder.
O Play two rounds of the game.
O Record the data from your two games on the data sheet.
O Click on “Learn More”.
O When finished put away iPad and answer the Hungry Birds questions.
Homework
O Human Thumb Conclusion Questions
O Hungry Birds Questions
O Ask for a pass if you need to get more data
for either assignment.
Human Thumb Lab
O Conclusion Questions:
1. Explain why dog and cat paws are not adapted for doing the six actions you tested.
2. What are dog and cat paws adapted for?
3. Describe how your hand is adapted for doing the actions you tested.
4. You have an opposable thumb. Explain what you think this means.
5. List and explain at least 2 reasons you feel that human hand adaptations have helped to make humans such a successful species on Earth.
Hungry Birds
1. How easy was it to eat moths?
2. Was it easier to see one color of moth than the other?
3. Did the number of dark colored moths you were able to see over the course of the game change?
4. Did an individual moth change color?
5. When the lighter moths became easier to see, and therefore “eat,” how do you think that changed the population of moths?
6. Once pollution controls were put in place, and the pollution lifted, the trees turned white again. What color moth would be easiest for the birds to eat, then?