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Free Biology Book> Evolution> Evolutionary Theory

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Biochemistry

Introduction to Biochemistry

Water and Mineral Salts

Carbohydrates

Lipids

Proteins

Enzymes 

Nucleic Acids

 

 

Cell Biology 

Cell Organization

Membranes

Cytoskeleton and Cell Movement

Cellular Digestion and Secretion

Cell Nucleus

Cell Division

Photosynthesis

Cellular Respiration

Protein Synthesis

 

 

Microbiology

Bacteria

Protists

Fungi

Virus

 

 

Zoology

Introduction to Taxonomy

Poriferans

Cnidarians

Platyhelminthes

Nematodes

Annelids

Molluscs

Arthropods

Echinoderms

Chordates

Fishes

Amphibians

Reptiles

Birds

Mammals

 

 

Physiology

General Histology

Blood

Metabolism and Nutrition

Digestion

Respiration

Circulation

Excretion

Skin and Coverings

Musculoskeletal System

Nervous System

Vision

Hearing and Balance

Endocrine System

Immune System

Gametogenesis

Reproduction

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View chapter-related images

fossils Lamarck Darwin Beagle ship Galapagos moths speciation 

adaptive convergence adaptive radiation analogous organs homologous organs

What is the problem that the theory of evolution and its rival theories try to solve?

 

The problem that the theory of evolution, or simply evolution, and its rival theories try to solve is to explain how the different living beings that live on earth have appeared.

What is the main theory opposed to evolution?

 

The main theory that opposes evolution on the explanation of how species emerged (phylogenesis) is the fixism.

What is fixism?

 

Fixism is the theory about the diversity of life on earth that affirms that the current existent species were identical to species of the past and came out already adapted to the environment without undergoing changes.

 

Fixism opposes evolutionism since evolutionism is the idea that current species emerged from gradual transformations suffered by ancestral and extinct species.

 

The religious version of fixism is called creationism. Many different forms of creationism are found in the mythology of several religions. Modernized religious interpreters teach creationism as a metaphorical wisdom and not as opposed to evolutionism.

 

Furthermore it is possible to make evolution compatible with creationism by considering that God in His perfection would not create a world so full of imperfections and sufferings like our world. One can maintain the creationist belief thinking that the world God created is other much better world or at least not the one that we see while admitting that the imperfect life we see emerged by evolution.

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Embryology

General Embryology

Extraembryonic Membranes

 

 

Botany

Plant Classification and Life Cycles

Bryophytes

Pteridophytes

Gymnosperms

Angiosperms

Plant Tissues

Plant Physiology

 

 

Genetics

Fundamentals of Genetics

Mendel's Laws

Variations of Inheritance

Linkage and Crossing Over

Sex and Sex-Linked Inheritance

Blood Groups

Karyotype and Genetic Diseases

Genetic Distribution

Genetic Manipulation

 

 

Evolution

Hypothesis on the Origin of Life

Evolutionary Theory

 

 

Ecology

Notions on Ecology

Earth Biomes

Energy and Matter in Ecosystems

Biogeochemical Cycles

Biodiversity

Ecological Interactions

Ecological Succession

Populations

Environmental Problems

 

 

Diseases

Notions on Parasitism

Bacterial Infections

Protozoan Infections

Fungal Infections

Viral Infections

AIDS

Worm Infections

Prion Diseases

Degenerative Diseases

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