Descent With Modification Lesson 3 Part 1 PDF

Descent with modification and the development of evolutionary thoughts  OBJECTIVES: At the end of the lesson, the learners shall be able to: K: discuss the patterns of descent with modification from common ancestors to produce the organismal diversity observed today; S: trace the develop...

Descent with modification and the development of evolutionary thoughts  OBJECTIVES: At the end of the lesson, the learners shall be able to: K: discuss the patterns of descent with modification from common ancestors to produce the organismal diversity observed today; S: trace the development of evolutionary thought; A: appreciate the importance of decent with modification by explaining the 10/9/2021 PRESENTATION TITLE 2  Descent with modification refers to the passing on of traits from parent organisms to their offspring. This passing on of traits is known as heredity, and the basic unit of heredity is the gene. 10/9/2021 PRESENTATION TITLE 3  Descent with modification Genes are the blueprints for making an organism and, as such, hold information about its every conceivable aspect: its growth, development, behavior, appearance, 10/9/2021 physiology, PRESENTATION TITLE and 4 Evolution described as “descent with modification” by Charles Darwin refers to the species that changed over time, giving rise to the new species and share a common ancestor. Descent with modification Is the process by which organisms pass on traits to their offspring, which can change overtime.  Explanation: 1. HEREDITARY – The passing on of traits from parent to offspring, which is controlled by genes. 10/9/2021 7  Explanation: 2. NATURAL SELECTION – The process by which organisms with traits that help them survive and reproduce are more likely to pass on those traits to their offspring. 10/9/2021 PRESENTATION TITLE 8  Explanation: 2. NATURAL SELECTION – The process by which organisms with traits that help them survive and reproduce are more likely to pass on those traits to their offspring. 10/9/2021 PRESENTATION TITLE 9  Explanation: 3. EVOLUTION – The process by which new species develop from existing species over time. 10/9/2021 PRESENTATION TITLE 10 STAGES OF EVOLUTION OF MAN 11  Characteristics of Evolution of Humans 1. The skulls were smaller in size than that of the current man. 2. The volume of the brain between 600-700 c.c. 3. Human had higher brows than in chimps and the face had more prominent facial structure. 4. Distinct edges of the forehead were clear and easily identifiable. 5. The occipital condyles were ventrally positioned 12 6. The back of the skull was round in shape.