answersLogoWhite

0

🧪

Evolution

The scientific theory according to which populations change gradually through a process of natural selection.

5,264 Questions

What caused Darwin to develop his concept of evolution based on natural selection?

i dont no It was at the Galapagos Islands where he observed finches andd marine iguanas.

What are the advantages and disadvantages of fossil record in studying evolution?

The fossil record is skewed in favour of marine or freshwater organisms because those are the most likely environments to preserve signs of lifeforms.

Even animals living on land are mostly found as fossils in water-lain sediments after they were swept into water. That is why fossils of humans are very rare, if we lived in the sea there would be many more to find.

Also, the chances of any animal or plant being fossilised is very, very rare, even in the sea.

What did Lamarck propose a scientific explanation for and why?

Lamarck proposed a scientific explanation for evolution because organisms evovled through the inherititance of acquired charactaristics.

Leaves of plants are attached to organs called?

A typical leaf has a blade (broad, flattened portion) and a stalk called the petiole. Some are directly attached to the stem of the plant.

Are pharyngeal pouches and tails evidence of evolution?

It simply highly suggests that all organisms going through this developmental phase have common ancestry, thus are related on the tree of life.

What biological molecules that are considered evidence for evolution include?

Biological molecules are considered evidence for evolution include

a. DNA

b. amino acids

c. porteins

d. all of the above

Answer: D. All of the above

Is evolution a theory that has a little scientific support?

A scientific theory, in order to be accepted by scientists must fits the facts as we know them, and be capable of predicting results not yet known. There should not be another, conflicting theory that better fits the known facts. The Theory of Evolution meets these requirements - it fits the facts as we know them, subsequent research results are consistent with the Theory of Evolution, and there is no other theory that better fits the facts known to science. The principal driver of evolution is known to be natural selection, but other, more specific drivers include sexual selection and so on. Just as natural selection results in the survival of the fittest, sexual selection results in attractive individuals being more likely to pass on their genes to the maximum number of offspring. Natural selection and sexual selection are both complementary and at odds. For example, if a male bird with an attractive, longer tail is less likely to escape its predators, then it may not have many offspring.

What are arguments could you pose to dispute evolution?

Evolutionists say that the purpose of life is to simply reproduce and reproduce. The theory tells us that we originated from a single bacteria to what we today know as homo sapiens. Yet bacteria are the BEST reproducing organisms in earth - it can reproduce MILLIONS in so little time. We humans reproduce after 9 months. In that way, evolution makes no sense. We should've remained as bacteria then, if reproduction really was the purpose.

The above answer is full of non sequiturs and illogical arguments. Example: The piece about reproduction is terrible confused. The coin evolution pays in is REPRODUCTIVE SUCCESS, not just a greater mass of reproduction. Both bacteria and humans are reproductively successful, which shows that there are many strategies practiced by various organisms that lead to individual reproductive success.

State the difference between geological evolution and organic evolution?

The word evolution has grown to be rather over-used and sometimes even misused, and is commonly used to refer to non-biological systems when talking about them in a sense of their changes over a period of time. For example, while computer systems do not evolve in the way biological organisms do, they have changed drastically over the years through a series of smaller changes. Outwardly this system appears very similar to biological evolution, and so evolution phraseology is useful in this context.

Geologic evolution refers to a system of changes within a geological system. An example would be studying how a specific area has changed from ocean to mountains to desert over a period of time. Once again, geological systems do no progress in a "natural selection" sense such as true evolution, but they can change in drastic ways via a series of smaller changes over a very long period of time.

Organic evolution presumably refers to a system of changes within a biological range. This could refer to the evolution of species or traits within a species, or may even relate to pre-biogenesis evolution of basic amino-acid strands.

What are the various possible consequences of the overproduction of offspring?

The overproduction of offspring causes competition for limited resources such as food, water and space. Some individuals are better suited for the environmental conditions and they are more likely to survive and reproduce. Those who are less adapted will not survive or they may migrate to another area. This is known as natural selection.


The overproduction of offspring can also increase the chances of diseases spreading in a population. The waste products of the population may also reach dangerous toxic levels. If the number of individuals exceed carrying then the population will crash.

Why was Charles Darwin's thinking innovative?

Given enough time and enough accumulated changes, natural selection can create entirely new species, known as "macroevolution." It can turn dinosaurs into birds, amphibious mammals into whales and the ancestors of apes into humans.
It was just too difficult for people to understand. They didn't the background to understand that things just weren't that simple and things like this too a very long time. It would be like trying to understand just how the universe began and how long ago it was. And they really didn't like the idea that humans an apes are related. In the long run, all organisms are related but it took a long time to go from single celled organisms to walking, talking and thinking humans.

Describe the importance of protists in the ocean?

Here are four reasons Protists are important on the Earth.
  • Fixes Co2 (carbon)

  • Produce Oxygen

  • Clean large bodies of water

  • They are the start of food webs/chains (Provides food)

How would an adherent to punctuated equilibrium explain the lack of intermediate links in the fossil record?

Where are you people getting these ill posed questions? What level? Transitional forms!

At the species level this would be explained as a rapid (geologically rapid) speciation event followed by years of stasis, where little morphological change is taking place.

Processes occur today as they did in the past?

Perhaps you are referring to "uniformitarianism".

How can islation lead to formation of new species?

Allopatric Speciation (geographic isolation) can lead to the formation of a new species because the population is split in two smaller populations by a physical barrier (river, canyon, mountain...).

Why are fossils of intermediate life forms likely to be rare if the pattern of punctuated equilibrium explains how evolution occurs?

Intermediate species forms, yes. A the taxa level, no. Still, not all taxa evidence is supportive of punctuation and stasis. Punctuated equilibrium is only one explanation of how evolution occurs in some species, not all species. The little shellies evidence gradualist processes very well.

What is the name of the theory that states species evolve during short periods of rapid change?

It is called Punctuated Equilibrium. Some Evolutionary apologists, notably Richard Dawkins, have down played this aspect of Neo-Darwinistic theory.

How old is angiosperms in evolution?

After being found in fossils, angiosperms were claimed to be 135 million years old

How did Darwin's theory of evolution broadly impact social development in 19Th century Europe?

They didn't.

What you are speaking of is called social Darwinism and it should have been called social Spencerism because Herbert Spencer mistakenly applied the theory of evolution by natural selection to social theory and thus committed the naturalistic fallacy and Lamarckism at the same time.

Just because something is natural does not mean it is good and how this " superior " social class viewed hereditary was straight out of Lamarck.

Darwin wanted nothing to do with this mistaken notion.

Describe the 4 kingdoms that comprise the domain Eukarya?

Animals: Motile heterotrophs that are multicellular and widely dispersed over the earth.

Plants: Sessile autotrophs that are multicellular and dispersed widely over the earth.

Protists: Comprising both autotrophs and heterotrophs these, generally, single celled organisms are usually found in a watery environment.

Fungi: These decomposing, multicelled detritovores are only found on the land where they are reasonably well dispersed.

What do gene mutations provide for a population?

A mutation is a change in the genetic code of one allele of your genetic code. ( rarely does mutation affect both alleles ) Most mutations are neutral, some are deleterious, but sometimes a mutation in the germ line can convey some slight advantage to progeny. An example of this is lactose tolerance in some peoples of the world.

Where human come from base on a theory?

According to the theory of Evolution by Darwin: Human evolution, or anthropogenesis, is the part of biological evolution concerning the emergence of Homo sapiens as a distinct species from other hominans, great apes and placental mammals. It is the subject of a broad scientific inquiry that seeks to understand and describe how this change occurred. The study of human evolution encompasses many scientific disciplines, most notably physical anthropology, primatology, linguistics and genetics. The term "human", in the context of human evolution, refers to the genus Homo, but studies of human evolution usually include other hominins, such as the australopithecines. The Homo genus diverged from the australopithecines about 2 Ma in Africa. Scientists have estimated that humans branched off from their common ancestor with chimpanzees-the only other living hominins-about 5-7 Ma. Several typological species of Homo, now extinct,evolved. These include Homo erectus, which inhabited Asia, and Homo neanderthalensis, which inhabited Europe. Archaic Homo sapiens evolved between 400,000 and 250,000 years ago. The dominant view among scientists is the recent African origin of modern humans (RAO) that H. sapiens evolved in Africa and spread across the globe, replacing populations of H. erectus and H. neanderthalensis. Scientists supporting the alternative hypothesis on the multiregional origin of modern humans (MTO) view modern humans as having evolved as a single, widespread population from existing Homo species, particularly H. erectus. The fossil evidence is insufficient to resolve this vigorous debate,while studies of human population genetics have largely supported a recent African Origin explanation.