Bases of Evolution Biology 2 Lesson 3 PDF

BASES OF EVOLUTION BIOLOGY 2 LESSON 3 OBJECTIVES: 1. Cognitive: Explain how the structural and developmental characteristics are used in classifying living things. 2. Psychomotor: Classify some living things base on their evolutionary evidence. 3. Affective: Appreciate the importance of e...

BASES OF EVOLUTION BIOLOGY 2 LESSON 3 OBJECTIVES: 1. Cognitive: Explain how the structural and developmental characteristics are used in classifying living things. 2. Psychomotor: Classify some living things base on their evolutionary evidence. 3. Affective: Appreciate the importance of evidence of evolution in classifying the living things. 2 PHYLOGENY In scientific terms, it is the evolutionary history and relationship of an organism or group of organisms. 3 PHYLOGENY describes the relationships of an organism, such as which organism it is thought to have evolved from, and which species it is most closely related to, and so forth. 4 PHYLOGENY provide information on shared ancestry but necessarily on how organisms are similar or different. 5 EVIDENCE OF EVOLUTION Structural evidence of evolution  HOMOLOGOUS STRUCTURES - A Structure that are similar in different species due to common ancestry. 20XX 7 EMBRYOLOGY - study of embryos and their development. Some homologous structures can be seen only in embryo development. 8 ANALOGOUS STRUCTURE - Structure that evolved independently in different organisms because the organisms lived in similar environments or experienced similar selective pressures 9 VESTIGIAL STRUCTURE - Structure that is non- functional, or reduced in function 10