Which parts of Lamarck's theory of evolution are no longer supported today? Choose two of the following.
- Organisms change over time
- Traits acquired during an organism's lifetime can be passed down to its offspring
- War, famine, and disease help keep population growth under control
- Organisms have an inborn need to become more complex and perfect
I think its the second and the last one, but I'm really not sure at all. Please help? Thanks
I think you're right.
Yes, they were right, thank you Ms. Sue!:)
The answers to Connexus Honors Biology U3 L3:
1. B (Hutton and Lyell)
2. A (Malthus)
3. B and D
4. A (Darwin concluded...nature)
5. D (natural variations)
You're welcome, SkatingDJ.
@SkatingDJ is correct!
hey guys, these comments are so old. how are ya doing
I'm not ok
why am I talking to myself and changing names
damn
Sure, I can help you understand which parts of Lamarck's theory of evolution are no longer supported today.
Lamarck's theory of evolution, proposed in the early 19th century, had several key ideas. Let's examine each of the options you provided and determine which ones are no longer supported:
1. Organisms change over time: This idea is still supported today. Modern evolutionary theory acknowledges that organisms change over time through the process of natural selection.
2. Traits acquired during an organism's lifetime can be passed down to its offspring: This idea, known as the inheritance of acquired characteristics, is not supported today. It was a fundamental part of Lamarck's theory, but later research and the discovery of genetics showed that traits acquired during an organism's lifetime are not passed on to the next generation. Inheritance is primarily determined by genetic information transmitted through genes.
3. War, famine, and disease help keep population growth under control: While these factors can have an impact on population dynamics, Lamarck's specific claim about their role in limiting population growth is not supported today. Current understanding of population dynamics relies on a combination of factors such as competition for resources, predation, disease, and reproductive strategies.
4. Organisms have an inborn need to become more complex and perfect: This idea is not supported today. Lamarck believed that organisms had a natural tendency to become more complex and perfect over time. However, modern evolutionary theory explains changes in organisms as a result of natural selection acting on heritable variations, rather than an inherent drive towards perfection.
Based on these considerations, the two parts of Lamarck's theory that are no longer supported today are:
- Traits acquired during an organism's lifetime can be passed down to its offspring.
- Organisms have an inborn need to become more complex and perfect.
I hope this helps clarify the aspects of Lamarck's theory that are no longer accepted in modern evolutionary biology.