PPT-for-General-Biology-2-PPT-4

General Biology

Evolution

• Evolution is described as "descent with modification."

• Charles Darwin mentions species changing over time, leading to new species and sharing a common ancestor.

• Development of Evolutionary Thought: THE THEORY OF EVOLUTION V2.

Evidence of Evolution

• Two types of evidence: Direct Evidence and Indirect Evidence.

• Direct Evidence includes observations of natural selection, laboratory experiments, and field observations like Darwin's Finches.

• Indirect Evidence involves Biogeography, studying the distribution of plants and animals on Earth.

Examples of Evidence

• Observations of natural selection, like the study of the peppered moth.

• Laboratory experiments, such as the evolution of antibiotic resistance in bacteria.

• Field Observation, like Darwin's Finches.

• Genetic studies, including comparative genomics and genetic variation within populations.

Wallace Line

• Alfred Russel Wallace, known as the Father of Biogeography, introduced the Wallace Line.

• The Wallace Line shows the division between Asian and Australian flora and fauna.

Fossil Records and Comparative Anatomy

• Fossil records provide a history of past life on Earth.

• Comparative anatomy and embryology reveal similarities among species, suggesting a common ancestor.

• Molecular biology, comparing DNA and protein sequences, also indicates common ancestry, like between humans and chimpanze