Biology
- Is There A Limit To Evolution On Earth?
What are our limits to evolution? There are two theories concerning the growth of diversity amongst the planet. These 2 theories include diversity in an equilibrium or diversity that is rapidly expanding (occupying every possible niche, as well as, exploiting...
- Natural Selection
What is Natural Selection? Natural Selection was a evolution theory introduced by Darwin in 1859. His theory was that the organisms that were best adapted and equipped to compete in their environment would survive and pass on their strong genetic traits...
- Life
What makes up Life? Life is supported by a few major characteristics that apply to all living organisms ranging from single celled organisms to multicultural organisms: Adaptations: Where an organism adapts to its environment in order...
- 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...
- 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
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 over time and many generations the organism would be evolving.
Lamarck's ideas of evolution were not the same. He believed in inheritance of acquired traits, the idea was if an organism were to work on improving something over its entire life, it would be passed on to its offspring and they would inherit that improvement. For example, if a man were to work out every day and became very muscular than his children would also become muscular. His other idea of evolution in known as use and disuse, this is the thought that organisms will lose characteristics they do not use or need and they will develop characteristics that will be useful. An example is giraffes, they need long necks to be able to reach leaves on trees so over time they strengthen and stretch, their offspring then have slightly longer necks.
They both have different theories and ideas, but they seem to have one certain point in common and that is that evolution is a slow process and it takes time and process for organisms to evolve.
- Is There A Limit To Evolution On Earth?
What are our limits to evolution? There are two theories concerning the growth of diversity amongst the planet. These 2 theories include diversity in an equilibrium or diversity that is rapidly expanding (occupying every possible niche, as well as, exploiting...
- Natural Selection
What is Natural Selection? Natural Selection was a evolution theory introduced by Darwin in 1859. His theory was that the organisms that were best adapted and equipped to compete in their environment would survive and pass on their strong genetic traits...
- Life
What makes up Life? Life is supported by a few major characteristics that apply to all living organisms ranging from single celled organisms to multicultural organisms: Adaptations: Where an organism adapts to its environment in order...
- 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...
- 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...