WARM-UP: How do fossil records support evolution?
Who's the Discussion Leader?
*Starts discussions
*Notes who participates
*Asks others to share ideas
*Keeps the Conversation on track
Who's the Screen-sharer?
*Needs a strong internet signal
*Shares screen for all to see
*Types agreed-upon answers/notes for all to see/copy
Who's the Time Manager & Reporter?
*Keeps track of time
*Monitors time left for each activity
*Warns group when time is almost out
*Shares the requirements for the activity with the group
*Calls teacher for help if needed
*Shares out to the main group
On the diagrams below, color each of the same bones in the rat and the elephant skeleton the SAME color. DO NOT reuse a color for another type of bone.
(click on "edit background" and then color choices are the very top option on the left side)
Were the bones with the same name in similar places on both the elephant and rat skeleton? Explain.
Did either the rat or elephant skeleton seem to have extra bones? Explain.
Similar structures in the anatomy of two different species are called homologies. What homologies are shared by rats and elephants?
What features would you look for in a fossil to determine if the now-extinct organism was related to a rat and an elephant?
How can patterns be used to identify common ancestry?