Evolution

Lamarckian evolution is based on the notion that changes that happen to an organisms physiology are passed on when it reproduces. Taking this to an extreme to show why it has been discredited, a person who loses their arm during their childhood does not have babies that are born with one arm. With regard to cave fish, Lamarcks theory of evolution argues that they lose their eyes during their life, and pass on this "lack of eye-ness" to their offspring. Modern genetics has further dampened this idea, as acquired characteristics are not carried in genes.

Darwinian evolution argues that, at some point during the cave fishes history, a genetic mutation caused one to be born with no eyes (or more likely, one was born with slightly less functional eyes). These fish, due to the nature of their dark environment, would be at no disadvantage to their fully sighted brethren. Eyes can easily get infected or irritated, so nature may have favoured on the side of the eyeless ones. Over time blind cave fish became dominant, eventually reaching the pinnacle of existence by being discussed on the internet.

Hope that helps.

Both predator and prey as with most animals in this world.

1. There is variation in individuals within a species

2. Variation ensures that individuals that are better suited to their environment will survive.

3. Traits that assist individuals in survival and allow them to reprduce gradually spread throughout population.

4. Individuals produce more offspring than the local resources can support.

For a new species to form, there needs to be a separation in gene flow (such as physical isolation or reproductive barriers) between populations, allowing for genetic divergence over time. This can lead to the accumulation of unique genetic and phenotypic traits that eventually define the new species. Additionally, natural selection plays a crucial role in driving the adaptation and survival of the new species in its specific environment.

Convergent evolution is the pattern of evolution where two unrelated species develop similar traits due to similar environmental pressures. This can lead to analogous structures in different species that serve the same function, even though they do not share a common evolutionary origin.

Evolution is not inherently misleading; it is a fundamental concept in biology supported by extensive evidence. Misunderstandings or misconceptions about evolution may arise from incomplete or incorrect information, personal beliefs, or deliberate misinformation. It is important to rely on scientific evidence and critical thinking to understand the complexities of evolution accurately.

Yes, the fossil record is considered a valid and significant piece of evidence for evolution. Fossils provide a record of past life forms and show a progression of species over time, supporting the idea that organisms have changed and diversified through evolutionary processes. Additionally, the discovery of transitional fossils helps to fill in gaps and provide connections between different groups of organisms.

The first cells appeared on Earth approximately 3.5 billion years ago during the Archean Eon. These cells are believed to be simple, single-celled prokaryotes.

The theropods were bipedal because they were carnivrous hunters. Running on two feet allowed them to be swift and agile so they could hunt prey better. This rendered their forelimbs unimportant so they grew small.

Humans and trees have approximately 25% of their DNA in common due to shared genes inherited from a common ancestor. The differences in DNA sequences account for the diverse traits and characteristics that distinguish humans from trees.

homologous structures- same structure/different functions in common ancestors

analogous structures-same functions/differnt structures not in common ancestors

vestigial-show evolutionary history/structures that arent used anymore (i.e. human appendix/human tailbone)

Protists are a diverse group of eukaryotic organisms that do not fit into other kingdoms like plants, animals, or fungi. They can be unicellular or multicellular and exhibit a wide range of forms and lifestyles. Protists play various ecological roles, from being photoautotrophs to predators, parasites, and saprobes.

Phylogenetic hypotheses are strongest when they are supported by multiple lines of evidence, such as morphology, genetics, and fossil data. Additionally, hypotheses that are consistent with principles of evolutionary theory and show high levels of statistical support are considered strong.

Lynn Margulis proposed the endosymbiotic theory, suggesting that eukaryotic cells originated from the incorporation of prokaryotic cells through symbiosis. She specifically highlighted the role of bacterial ancestors, such as mitochondria and chloroplasts, in the evolution of protists. According to Margulis, these symbiotic relationships contributed to the complexity and diversification of protists.

that depends. if you like water, u are vaporeon. like fire, u are flareon. like thunderstorms and electricity, u are jolteon. like grass and quiet, u are leafeon, like snow and playing, u are glaceon, like psychic and magic, u are espeon, like darkness and night, u are umbreon, if u are cute, u are eevee

I believe you are asking about divergent evolution. Divergent evolution is the accumulation of differences between groups which can lead to the formation of new species, usually a result of diffusion of the same species adapting to different environments, leading to natural selection defining the success of specific mutations.

To draw an organelle, first identify the specific organelle you want to draw, such as a mitochondrion or chloroplast. Then, use reference images or diagrams to understand its structure and shape. Finally, sketch the organelle using simple shapes and lines to represent its components accurately. Practice and attention to detail will help improve your drawing skills over time.

Sectoral evolution refers to the transformation and changes occurring within a specific industry or sector over time. This can include shifts in technology, market demand, regulations, and competition that impact how businesses operate and innovate in that sector. Monitoring sectoral evolution is important for businesses to adapt and stay competitive in a rapidly changing environment.

In essence, the biochemical evidence for common descent is simply a specific set of examples of the same principle that all biological evidence for common descent adheres to: nested hierarchies. The same nested hierarchies that demonstrate common ancestry in comparative genomics, comparative morphology and developmental biology, also demonstrate common ancestry in our metabolic pathways and other chemical molecules and processes in our cells.

Understanding evolution is important because it helps us make sense of the diversity of life on Earth and the relationships between different species. It also allows us to better predict how organisms may change in response to environmental challenges, and has practical applications in fields such as medicine, agriculture, and conservation. Furthermore, recognizing the role of evolution can foster a deeper appreciation for the interconnectedness of all living things.

Urey and Miller used an electric current in their experiment to simulate the effects of lightning in the early Earth's atmosphere. They wanted to see if the combination of gases found in the atmosphere at that time could produce organic compounds like amino acids, which are the building blocks of life.

Evolution contributes to the origin of new species through a process called speciation, where populations of a species become genetically distinct from one another over time. This can happen through mechanisms such as natural selection, genetic drift, and gene flow, leading to reproductive isolation and the formation of new species that are no longer able to interbreed with the original population.