III. Geographical Distribution: _________________________________________ despite geographic isolation Examples: Galapagos Island Finches IV. Chromosomal Comparisons: Species may look different but have chromosomes that are _______________________________________ in structure Example: Cauliflower, Cabbage, Broccoli V. Biochemistry: Studying DNA sequences, proteins, nucleotides in different organisms If DNA sequences and proteins are more alike, then probably the organisms are _____________________________________________. Classification using Cladograms To refine evolutionary classification, biologists now prefer a method called cladistics. Cladogram a _______________________________ that shows the evolutionary relationships among a group of – organisms; includes ______________________________________________ that arise as lineages evolve. Characteristics that appear in recent parts of a lineage but not in its older members are called __________________________________________ Now let’s see if you can do it…. ***Make sure you can identify all of the different terms we discussed in our previous notes AFTER you finish your cladogram (don’t worry…we will do this together in class
III. Geographical Distribution: _________________________________________ despite geographic isolation Examples: Galapagos Island Finches IV. Chromosomal Comparisons: Species may look different but have chromosomes that are _______________________________________ in structure Example: Cauliflower, Cabbage, Broccoli V. Biochemistry: Studying DNA sequences, proteins, nucleotides in different organisms If DNA sequences and proteins are more alike, then probably the organisms are _____________________________________________. Classification using Cladograms To refine evolutionary classification, biologists now prefer a method called cladistics. Cladogram – a _______________________________ that shows the evolutionary relationships among a group of organisms; includes ______________________________________________ that arise as lineages evolve. Characteristics that appear in recent parts of a lineage but not in its older members are called __________________________________________ Now let’s see if you can do it…. ***Make sure you can identify all of the different terms we discussed in our previous notes AFTER you finish your cladogram (don’t worry…we will do this together in class
chapter_17_lecture_guide.docx