Unit 7: Evolution IntroDoc
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Last updated over 3 years ago
14 questions
Watch this introductory video.
1
If organisms survive and reproduce at higher rates, they have higher _____.
If organisms survive and reproduce at higher rates, they have higher _____.
2
Name two sources of variation in populaions:
Name two sources of variation in populaions:
1
Traits that vary in populations can be neutral, negative, or positive. Which is/are likely to increase in frequency in populations?
Traits that vary in populations can be neutral, negative, or positive. Which is/are likely to increase in frequency in populations?
1
Explain your answer for the question above.
Explain your answer for the question above.
Watch this short video about the “ingredients” for natural selection.
1
What three things MUST occur for natural selection to happen? (Use complete sentences)
What three things MUST occur for natural selection to happen? (Use complete sentences)
Watch this video about adaptation.
1
Why do some populations of organisms look similar over long periods of time?
Why do some populations of organisms look similar over long periods of time?
1
Give an example from the video for question 6.
Give an example from the video for question 6.
1
Why do some populations of organisms look different over time?
Why do some populations of organisms look different over time?
1
Give an example from the video for question 8.
Give an example from the video for question 8.
Click this link and examine these tiles (the ones NOT marked out):
Ancestry of Land Plants, Mouth or Butt First?, Tiktaalik, The Ant-Wasp, and Dino-Birds.
For each tile, list the type(s) of evidence used by scientists when studying the evolution of organisms.
2
Ancestry of Land Plants?
Ancestry of Land Plants?
1
Mouth or Butt First
Mouth or Butt First
2
Tiktaalik
Tiktaalik
3
The Ant-Wasp
The Ant-Wasp
3
Dino-Birds
Dino-Birds