Evolution predicts change over time....?

Question

researchers continue to search for an organism that shows significant evolutionary change.Even marine creatures have remained unchanged( in size) for millions of years..why?
(Biologists from the University of California at San Diego (UCSD) and the University of Chicago (UC)

Pardon me, but the fossil evidence shows no changes.

Answer 1

No, researchers continue to search for an organism that shows ANY evolutionary change. There has never been any scientific proof of evolutionary change...speciation, yes, adaptation, yes! as organisms not suited to the environment die without reproducing, leaving more suited species to reproduce and expand. But evolution presupposes the existance of mutations that ADD information to the DNA code, instead of losing it. That has never been demonstrated. The reason the marine creatures (and every other creature) have remained basically unchanged is because evolution is an usupportable thesis. Every major evolutionary "doctrine" has been proven false over the years, yet people continue to propagate its teaching because the alternatives to evolution (intelligent design, creationism) are unacceptable to them. Monkeys and apes are perfectly suited to their environment. Why, then, did man evolve? He didn't.

Answer 2

Darwin's theory of evolution has been proven wrong. Evolution is not a continual, on-going process. The current belief is that a creature does not evolve, once it has achieved a state where it is in balance with it's ecosystem. For instance, many herbivores that group in herds will all calve at the same time. This has evolved so that the predators cannot kill all the calves. Some will live long enough to be able to out-run the lions. An organism only evolves if there is a change to the ecosystem. A dying off of a main food supply, introduction of a new predator, change in water supply. Animals either evolve or die. It has also been observed that evolution takes place (geologically speaking) very quickly. That's why there are fewer of the transitional forms fossilized.

Answer 3

Some species have not changed much - some have !!!
The time it takes to get a new generation is also important ! If you study a bacteria that can reproduce itself in a few hours, or an animal that will reproduce every 10 or 20 years, the result can be very different !!!!

Get a look at wikipedia, pharyngula, talkorigins, panda`s thumb, you will find data on species that have evolved during the study -

Answer 4

Some species of marine organisms have indeed been selected for stability of form. Their particular adaptations have been highly successful, and have remained stable for millions, even hundreds of millions of years.

This is a testament to the stability of marine environments and the ongoing success of a good adaptation (if it ain't broke, don't fix it).

But at the same time, there have been many other marine organisms that have undergone considerable and profound evolutionary changes in that same time period. It is in the extreme environments, the unstable habitats, or the newly formed niches that we see adaptive radiations and explosive modifications of existing body forms.

Work on snail shell morphology at high energy land/water interface areas on newly formed islands has shown extremely rapid variations in morphology over short periods of time, even in species that elsewhere show extremely stable morphology.

These cases illuminate a lot about the mechanisms that drive evolution, and the potential for variation that exists even in species that appear to have been static in their development for millions of years.

Answer 5

"Change over time" is a code phrase used by creationists who object to "natural selection" and "evolution" because they can't scientifically refute either.

Organisms don't automatically change. Species mutate and, sometimes, that mutation affords them an advantage under a specific environmental pressure. These individuals have a greater chance of surviving long enough to reproduce and pass along that advantageous trait.

The process is generational. That's why bacteria, which reproduce at phenomenal rates, can so readily develop resistance to improperly administered antibiotics.

Answer 6

SOME species remain unchanged, because they are well adapted to their environment and their environment remains stable over millions of years. those types of species are puzzling and thus may be considered worthy of research. the majority of species however have experienced quite different circumstances. evolutionary theory seeks to explain the observation that the majority of species change over time. it is not really a "prediction", it is too obvious for that. change over time is certainly not absolute - the rate of change can apparently vary over several orders of magnitude.

Answer 7

Lots of fun will be had with this question.

Philosophically, I love things like, "If humans evolved from monkeys, why are there still monkeys?" A good question.

Two fish swimming in the ocean billions of years ago. One decides to evolve into a land dweller, the other doesn't.

Scientists find a mosquito billions of years old stuck in sap. Why have mosquitoes not evolved when everything else has?

Sucks to be a mosquito knowing that's as advanced as you'll ever get.

Answer 8

Because that size for those particular species may be the perfect size for the conditions those species live in. Evolution is a change to adapt to the environment, why would they change more when they are at perfection?

Answer 9

evolution certainly depends on numerous factors
it cant fully predict a change if we can forsee hw ll de nxt pic
its just a narrow path of change

Answer 10

See the congo eel, a salamander common to the southeastern USA, a species in transition.

And for further confusion, look into ring species, like the herring gull.