14. Quiz Evolution in Action. 5/18/2011 No Name Cards Pencil / Eraser / Red Pen SS 14 Homework : Definition of key terms (p. 258) 7-1,7-2 COL: 7-1, 7-2, 7-3, 7-5, SS 12, 13,14 Next Thursday Last person pass out books for row. Evolution in Action.
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Which of these is one of the main ways that new species form?
A branching tree is
Scientists combine evidence from fossils, body structures, early development, DNA and protein structuresto determine
True or False? The more similar the DNA sequences of two species are the more closely related the species are.
Proteins can be used to determine how closely related organisms are because amino acid sequences are determined by the _______________ that make up an organism's genes.
A new ____________ can form when a group of individuals become isolated from the main group.
Scientists show how groups of organisms may be related by placing them in diagrams called _________________.
Which of these is the leading cause of extinction?
True or False? All organisms of a species have identical traits.
True or False? Environmental change always leads to extinction of species.
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