Biology
- Evolution
Evolution: Darwin vs. Lamarck Darwin's theory is called descent with modification. This means that he believed that each generation of an organisms offspring is in someway different than the previous generation. Which in conclusion would mean that...
- 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...
- 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...
- 5. Evolution
Click here for PDFEvolution is an orderly change from one form to another. Evolutionary Biology: Study of history of life forms. ORIGIN OF LIFEBig Bang Theory states that universe originated about 20 billion years ago, by a thermonuclear explosion (big...
- When Evolution Goes Sideways ? Sea Slug Hybrids, Part 3
This is the third and final installment in our story of photosynthesis by an animal. E. chlorotica, a simple sea slug, has proven to be not so simple. We have seen that it is an exception to the "animals as heterotrophs" rule, as well as an exception...
Biology
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, use and disuse of organs, development of acquired characters, inheritance of acquired characters and speciation. | Main postulates are overpopulation, limited resources (food etc), struggle for existence, development of variations, natural selection of the fittest, inheritance of useful continuous variations and speciation. |
| 3. Speciation is due to accumulation of acquired characters of a number of previous generations. | Speciation is due to accumulation of useful continuous variations of a number of previous generations. |
| 4. Use and disuse of organs is the major cause of development of acquired characters. | Natural selection is the key point of speciation. |
- Evolution
Evolution: Darwin vs. Lamarck Darwin's theory is called descent with modification. This means that he believed that each generation of an organisms offspring is in someway different than the previous generation. Which in conclusion would mean that...
- 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...
- 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...
- 5. Evolution
Click here for PDFEvolution is an orderly change from one form to another. Evolutionary Biology: Study of history of life forms. ORIGIN OF LIFEBig Bang Theory states that universe originated about 20 billion years ago, by a thermonuclear explosion (big...
- When Evolution Goes Sideways ? Sea Slug Hybrids, Part 3
This is the third and final installment in our story of photosynthesis by an animal. E. chlorotica, a simple sea slug, has proven to be not so simple. We have seen that it is an exception to the "animals as heterotrophs" rule, as well as an exception...