1. Elephant shrew = CGTTAAGCC
Changes Over Time
Objective: To explain how physical characteristics of organisms change over generations
Bell work: Compare the DNA for each:
Mouse = ATCGATGCA
Elephant shrew = CGTTAAGCC
Elephant = CATTAACGG
Using your knowledge of DNA base pairs, what would the other strand of DNA for the mouse look like?
TAGCTACGT
Which two organisms do you believe are most closely related?
Elephant and the Elephant Shrew because they share more genetic similarities
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2. 1.  Based on the DNA sequences pictured above what 2 species would you say are more closely related?  Please explain.
2.  Based on the DNA sequences pictured above what 2 species would you say are least closely related?  Please explain.

3. According to graph what species are humans furthest related to
 According to graph what species are humans furthest related to?  What information did you use from the graph to answer question.
2.  As the difference in number of amino acids increases what happens to the genetic relatedness between two species.