How did Charles Darwin propose that new species arose from a single common ancestor?Can anyone help?

Question

How did Charles Darwin propose that new species arose from a single common ancestor?Can anyone help?

Answer 1

it is all outlined in "the origin of species", head on over to spark notes and read the outline. A basic overview of the topic is that through mutation adaptations to specific environments promoted the reproductive success of an individual and ensured the survival of the trait to the point that repeated mutation and adaptation would lead to speciation over time through natural selection.

Answer 2

Actually, there is one animal which is the common ancestor, to living animals of today. It is one billion years old, and unlike plants, which breathe in carbon dioxide, and breath out oxygen, it is the oldest surviving animal that breathes in oxygen, and breathes out carbon dioxide...

Answer 3

Yeah, I'd like to see that happen myself.

Answer 4

he went to the galapagos islands and compared the different types of bird beaks. he concluded that they all evolved from a common ancestor because the birds from the different islands had evolved their beaks to the different types of food on their respective islands.

Answer 5

read his book

"The Origin of Spieces"

or try wikipedia.com

Answer 6

HE went to the Galapagos Islands and compared the Iguanas and other animal from there to the animals on the mainland and though of why they could be so similar but with different characteristics. HE compared the beaks of Finch's and the shells of turtles. He cam up with the hypothesis of Natural Selection that states, "If an animal is better fit for a ny given environment, then that animal will survive and reproduce. The traits that helped that animal to survive will be passed to each generation" or something to that matter. He concluded that the animals from the mainland and the Galapagos Islands must have been separated. The separated ones with traits helping them to survive created species like the ones on the mainland but with specific traits to help them to survive(also called adaptations)

Answer 7

Of course he proposed it, He put it in a book. (The origin of the species) All the same, that does not make it fact. There is nothing in the fossil record which offers support for his all to vague observations, and if the fossil record doesn't show it where is the proof. I believe that the closest we have ever come to a relative would be the neanderthal man who did not die out, but was integrated with homo sapien. We can even see a few throw-backs today as proof of this.

                  I would like to take this opportunity to say that  many folk just accept the word of so called experts and believe that cheetah is a cousin of theirs twice removed.

     He was a movie star, you say!

   I say he was also a chimpanzee and no cousin of mine.

Answer 8

Through variation, over time.

It is the macroscopic version of how we breed animals or plants for their traits.

Broccoli, Broccoli Rabe, turnips, kohlrabi, canola and mustard seed, and several other plants were all domesticated by *mankind* from the same plant by selecting for characteristics each culture prefered- big roots, oily seeds, white or green flowers, etc.

Charles Darwin basically said "If mankind can do it, why can't nature?"

Answer 9

Mostly by studying life on isolated islands where species that lived on the mainlands developed and adapted differently on these islands. And I believe his ignorance of cellular mechanisms, since in his time a cell was observed as a fuzzy glob, so it was easy to conclude that all life could originate from these same fuzzy globs. Today we know that's not true at all, mutli cell life forms are very specific and complex, way to complex to have evolved from a single cell organism by adaptation and mutation!

Answer 10

Darwin did not have knowledge of modern molecular biology, so the honest answer is that he didn't actually know "how" it happened, he could only confirm that it did happen.  Later scientists fleshed out the arguements for him with their research into the genetic code, he merely put forth the hypothesis.  The methodology he proposed was evolution by natural selection.  The exact beginning of life was a mystery to him.

Answer 11

WHat exactly do you mean?

How did he propose it? Or what mechanism did he propose? What led him to that? Which one? That's a vague question.