Q1 – Week 7 – 10/11 – 10/15
10/11 – Monday – Columbus Day – Indigenous People day
10/12 – Tuesday – B Day –
Evolution Presentation: Slides 1 – 12 today
2: For questions 4, 5, 6 of the form:
2: For questions 7 and 8 of the form:
End of Tuesday!
10/13 – Wednesday – A Day –
Evolution Presentation: Slides 12 – 35 today
Today’s Cladogram lesson:
10/13 – Wednesday’s Homework: –
|Notice that in 1977 there was a drought that caused a selective pressure for larger beak depths as only larger seeds were available after this drought. This trend was reversed in the 1980’s as the wet period introduced more smaller seed plants back to the island.|
|These are diagrams of the morphology of mammals who we have identified as being related by evolutionary decent in large part because of there homologous structures.
These structures have different functions (flight in bats) or navigating water (in whales) yet structurally similar.
Notice that all of these organisms have a big bone attached to smaller bones called phalanges (blue).
1. Please view the video below and
2. complete the form below.
1: The Origin of Corn Video for the a maizing form below:
End of Wednesday!
10/14 – Thursday – B Day –
evidence to build a phylogenetic tree and cladogram.
Classwork: Minion cladogram
Cladograms are built using many forms of data. In this case morphological data is used to construct this hypothesis of how these organisms are most closely related.
Time in these diagrams is the Y – axis so unlike the diagram above, as you move higher and right the species becomes younger or evolved later than the organisms that are lower and to the left.
Notice that these diagram also have Nodes or places that illustrate common ancestors.
Notice that the human all the characteristics listed and thus is the last to evolve while the Lamprey has the least of the characteristics and thus evolved much earlier in time.
10/14 – Thursday’s Homework:
Understand that a cladogram is a hypothesis of how we think organisms have descended with modifications . These modifications are newer traits or alleles. Simply put organisms evolve from simple to more complex.
a) Bozeman video on cladograms:
c) mrgrodskichemistry’s video on cladograms: (hey that’s me!)
d: Video on the AP practice cladogram problem:
10/15 – Friday – A Day –
Cladogram-Phylogentic Tree Advanced Problem 2018 KEY.pdf View Download
4. Cladogram Quiz