please help darwins theory?

Question

Branching evolution, which implies the common descent of all species. can you please give me one example of that.

Answer 1

its kinda hard to help a theory when its not true

here is how darwin himself closes his book, Origin of Species:

There is grandeur in this view of life, with its several powers, having been originally breathed by the Creator into a few forms or into one; and that, whilst this planet has gone circling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been, and are being evolved.

yes thats right he said "originally breathed by the Creator" not evolved!

so you can put that in your juice box and suck it!

Answer 2

Absolutely.

The concept of BRANCHING is one of the most fundamental ideas to understanding evolution. A new species is ALWAYS, ALWAYS, ALWAYS the result of one species branching into two.

There are many ways that branching can happen. The most common way is when two sub-populations of a species get *geographically isolated* from each other (e.g. a river bisecting a valley, a bad winter or a drought causing a big migration, a lake separating into two lakes, etc. etc.). This is a relatively common occurrence. But if the two sub-populations are separated for enough generations, then they will accumulate enough genetic differences that they are no longer capable of interbreeding. I.e., even if they come into contact again, and even if they show interest in each other, the resulting offspring are either stillborn, sterile, or just too weak to survive to reproduce further. At that point, we can officially say that the one species has branched into two species. Once they have branched, it is practically impossible to become genetically compatible again (i.e. the two species can never merge back into one). They are now *permanently* free to evolve in completely different directions, and become very different physically ... even if they live in the same environment.

The most famous examples of observed instances of this kind of branching are with animals that get geographically isolated on islands ... such as the Galapogos finches, and komodo lizards.

That type of *geographic* isolation is called "allopatric speciation" ... but there are several other ways that subpopulations can become *genetically* isolated. (See source.)

But the main point is that these all result in BRANCHING.

If you understand branching, you are well on your way to understanding evolution. If you don't understand branching, you don't understand the theory of evolution at all.

Answer 3

people get confuse on the subject of darwins theory. first he did not say the survival of the fittest, that came later.what he did discover witht he finches though is that there were many different types. the branching usually comes from some event, like a evolutionary bottleneck of a founders effect.

take a flock of birds flying somewhere they always fly, but for some reason they get blown off course by some large storm and end up somewhere these brids have never been, and no other population of the same type of bird has been. being able to get food easier than anywhere else they stay. this is called a founders effect. eventaully they will evelve to obtain resources more efficiently, now there are two diiferent type of that bird, one from the original land they came from and another on this new island. this is an example of branching.

Answer 4

The finches of the Galapagos Islands. This is an example Darwin himself observed.
Several islands in the Galapagos archipelago each have a unique but related species of finch. Each species displays distinct physical characteristics like beak shape or foot shape that in some way give the birds an advantage based on the food resources available on that island. All of the species have a common ancestor, one species of finch that migrated to the islands from the mainland.
By the way, if you are thinking of copying this for a homework assignment, don't. These are *my* words. Plagiarism will get you nowhere in life.

Answer 5

This is really the heart of how Darwin discovered the roots (pun intended) of his theory. When he went to the Galapagos islands he noticed that there were many animals that were similar, but just a little different than ones he saw on the mainland of South America earlier in his trip. So he got the idea that they were originally mainland animals, but over time they changed through genetic adaptations to animals that were better suited to living on the island. For example there were probably one type of mainland finch (small bird) that somehow got to the different islands and Darwin noticed that each finch on each different island was different. He put together that each finch was probably originally from this mainland type and then through isolation and genetic variation they branched out into different species.

Answer 6

Hi. Like the branches of a tree, all connect to the trunk. If you think of the leaves as species just for a minute, you can see how they all share a common source. Of course, there is more than one tree!

Answer 7

Sure. The example of evolution is the Primates: The chimpanzees, the bonobos, the gorillas, the orang utans, and homos. All have common ancestry back to millions of years ago.

Answer 8

Darwins says that all species are adapted itself to evolution and can live with the habitat aroud of itself

Answer 9

Tarcísio Brito: It describes the life in the Land (infinite), where all species also the man has certainly ancestral origin, where a trip for front (for the future) results in an arrival to the past of Daily pay-History; e that finishes in return to the gift of Our Historia. I circulate that our alternating History of Daily pay-History is happened again infinitely.

Answer 10

Google " taxonomic tree ".