Biology
Darwin proposed that all living things were related and that everything evolved from a common ancestor. He realised that there was variation within a population, and that only the best adapted to the environment would survive and pass on their genes (survival of the fittest). This idea of natural selection leading to gradual changes was revolutionary at the time. Sometimes one person can change the way that we think about things and can be correct, even when everyone at the time thinks that they are wrong.
Useful links:
Adaptation
Natural selection
- Homework- Gas Exchange
After watching the video clip (under lung structure post) on gas exchange in the lungs, write a detailed account of how gas exchange occurs. You need to include terms such as: surface area, diffusion, alveoli, capillary network etc You should of course...
- Evolution Part 3 - Natural Selection
EVOLUTION PART 3 ? NATURAL SELECTIONMs. Carter MUTATIONS are changes in our DNA. Sometimes, mutations are harmful and cause death. Other times, mutations give the individual an advantage and allow these individual to survive certain environmental conditions...
- Comparison Between Artificial Selection And Natural Selection
Artificial selection and Natural selection: Major differences Artificial selection Natural selection 1. It is the man-made selection It is the nature-made selection 2. It produces varieties of organisms very...
- Comparison Between Darwinism And Neo-darwinism
Darwinism and Neo-Darwinism: Major differences Darwinism Neo-Darwinism 1. Proposed by Darwin and Alfred Wallace It is the modified Darwinism in the light of genetics 2. Causes of variations...
- Comparison Between Lamarckism And Darwinism
Lamarckism and Darwinism: Major differences Lamarckism Darwinism 1. Proposed by Jean de Lamarck Proposed by Charles Darwin 2. Main postulates are environmental changes, new needs,...
Biology
Adaptation and Natural selection
Darwin proposed that all living things were related and that everything evolved from a common ancestor. He realised that there was variation within a population, and that only the best adapted to the environment would survive and pass on their genes (survival of the fittest). This idea of natural selection leading to gradual changes was revolutionary at the time. Sometimes one person can change the way that we think about things and can be correct, even when everyone at the time thinks that they are wrong.
Useful links:
Adaptation
Natural selection
- Homework- Gas Exchange
After watching the video clip (under lung structure post) on gas exchange in the lungs, write a detailed account of how gas exchange occurs. You need to include terms such as: surface area, diffusion, alveoli, capillary network etc You should of course...
- Evolution Part 3 - Natural Selection
EVOLUTION PART 3 ? NATURAL SELECTIONMs. Carter MUTATIONS are changes in our DNA. Sometimes, mutations are harmful and cause death. Other times, mutations give the individual an advantage and allow these individual to survive certain environmental conditions...
- Comparison Between Artificial Selection And Natural Selection
Artificial selection and Natural selection: Major differences Artificial selection Natural selection 1. It is the man-made selection It is the nature-made selection 2. It produces varieties of organisms very...
- Comparison Between Darwinism And Neo-darwinism
Darwinism and Neo-Darwinism: Major differences Darwinism Neo-Darwinism 1. Proposed by Darwin and Alfred Wallace It is the modified Darwinism in the light of genetics 2. Causes of variations...
- Comparison Between Lamarckism And Darwinism
Lamarckism and Darwinism: Major differences Lamarckism Darwinism 1. Proposed by Jean de Lamarck Proposed by Charles Darwin 2. Main postulates are environmental changes, new needs,...