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Charles Darwin
Author of The Origin of Species and creator of the theory of evolution and the concept of natural selection
3,722 Questions
Where did the common ancestor of the galapagos finches originate?
the finches originally came from south American main land
What are examples of post-Darwin evidence for evolution?
Good question. Evolution is like, well did you ever throw a piece of trash on the groud? Than if the rest of us did to in that same spot. It changes the earth and trees, flowers, and grass might die. But I think the trick is pictures.
~Amythefairy
What animals other than finches did Charles Darwin find on the galapagos islands?
Finches...he based his theory on the shape of their beaks
What is the process called when allele frequencies in a population of a species change over time?
Evolution; the change in allele frequencies over time in a population of organisms.
Why is archaeopteryx important in the theory of evolution and what evidence it can prove?
It was important because Darwin's theory of evolution predicted the existence of "transitional" fossils; evidence that animal groups (in archaeopteryx's case) such as birds and reptiles had common ancestors. Archaeopteryx had feathers, like modern birds, but also teeth and a bony tail - which no modern bird has.
It was also important because of the timing of its discovery; Darwin's On the Origin of Species was published in 1859, in 1861 the first complete specimen of archaeopteryx was discovered (a feather had been discovered earlier). It provided such timely and compelling supportive evidence that some people claimed it was a fake. Since then, 9 further specimens have been found - essentially ruling out that possibility.
What was different in finches on each islands?
The finches on the different Galápagos Islands exhibited notable variations in beak size and shape, which adapted to the specific food sources available on each island. For example, some finches developed larger, stronger beaks to crack hard seeds, while others evolved smaller, more delicate beaks suited for feeding on insects or softer fruits. These adaptations are a key example of natural selection, illustrating how species can diverge based on environmental pressures. This diversity among finches contributed significantly to Charles Darwin's theory of evolution.
Did Darwin claim man evolved apes?
An 'ape' is any member of the Hominoidea superfamily, which includes lesser apes like the gibbon, and the greater apes, such as chimps, gorillas and humans.
This kind of relation shows that all of these share a single common ancestor. This ancestor is what we evolved from.
Is the ancestors of the human kind are the apes?
Humans share a common ancestor to Chimps and Bonobos. This ancestor is one that we would likely label an ape. Therefore for most people's purposes, yes, we evolved from apes, but not from modern apes.
We would most likely classify the miocene ape that is the common ancestor of humans and modern apes as an ape. It was a primate, as we are. The catarrhini include the old world monkeys, gibbons, great apes, and humans. These and the platyrrhini (new world monkeys) are included in the same clade. Our next closest relatives would be the tarsiers. We are yet more distantly related to lemurs, galagos, lorises, and other primates, all of which are, of course, eutherians (placental mammals).
Two key pieces of genetic evidence for our common ancestry with the old world primates are the L-gulonolactone oxidase gene which expresses a protein responsible for ascorbic acid synthesis, and the number of chromosomes. First, the GULO gene is broken in us the same way it is broken in almost all other old world primates. That is pretty decent evidence for common ancestry. On the other hand, the old world primates have 24 pairs of genes, while we have only 23. If evolution is correct, somehow a pair of monkey chromosomes must have fused. Chromosome ends contain recognizeable DNA sequences known as telomeres. It turns out we have identified the two ape chromosomes which fused to form a single human chromosome, and we even find the telomere markers within that chromosome.
There are plenty of other strong pieces of evidence. The Rh blood factor. The letters "Rh" came from the rhesus monkey, where the factor was first studied. Human females menstruate, procreate, give live birth, and nurse their young in much the same manner as apes. The differences between us and other primates are quite small.
What is the vultures beak adapted for?
Vultures have beaks which are adapted for tearing animal flesh
The Galapagos finch species is an excellent example of?
The Galapagos finches were studied extensively by Charles Darwin and were instrumental in his theory of evolution. They show adaptive radiation, meaning they evolved to fit different niches in their habitat.
Birds, chickens, and ducks are one of the animals that use beak in eating.
What did Charles Darwin conclude based on the giant tortoises observed in the Galapagos Islands?
Darwin learned that there were different shaped backs of the tortoises, some had arc shaped or straight. The other thing the tortoises had is long or short necks. There were varieties of island and on every island there were different tortoises.
What island did Darwin observe finches on?
The Galapagos Islands. About 600 miles due West of Ecuador.
How has the green warbler finch adapted to the galapagos?
It was noted that the birds (finally understood to all be finches) had different shaped and different sized beaks. They also ate different types of foods. And they lived on different islands. The islands were too far for them to fly to.
They probably were all one finch long ago but they had to adapt to the food that was there. Some had thicker becks that worked the best on their island and others had much thinner beaks that worked best to get food on another island. These birds never bred with each other and really became separate species.
How did Darwin explain differences in shell shape of tortoises hood island and isabela island?
Adaption to the environment is how Darwin explained the differences in shell shape. Hood Island tortoises needed to reach up with their necks further for food than the Isabela Island tortoises.
What observations were made about the finches on the Galapagos island?
Firstly, they aren't true finches. They were collected by Darwin on his second voyage. The main observations are there beak shapes and sizes. Depending on their location in the islands, the finch's diets vary and then because of their varying diets they have varying beaks which have adapted to their food sources. The variances in the finches and their beaks despite all living in the same island chain spurred Darwin's theory of evolution.
Since Darwin's time there have been many expeditions to the Galapagos Islands and new discoveries have been made such as the Large Cactus Finch males have two different beak types. Those with the shorter beaks have one distinct song and those with longer beaks have a different distinct song. They both feed on the same type of cacti, but in different ways due to their beak types. It's thought it's so the birds can all still feed when the food is scarce.
Why do finches have different beak types?
Because they eat different stuff. Just like rabbits and cats have different teeth.
What is evolution and how does it occur?
Evolution is the change in allele frequency over time in a population of organisms. Mutation and natural selection, the nonrandom survival and reproduction of randomly varying organisms, are the main drivers of evolution. Genetic drift, a sampling error and gene flow between populations of the same species also can cause evolution, but, generally, in small populations.
Do you believe that man descended from apes?
no cuz in the bible it doesnt say w are related to ape the bible says that god breathed life for the sand and created Adam and eve so we are not related to ape cuz god created us like him and the animal within their species
According to Darwin's Theory of Evolution, yes we are related to apes.
How did Charles Darwin become interested in science?
Charles Darwin was a biologist. he had the initial theory of natural selection or "survival of the fittest" this was the idea that when an animal was born slightly different from its species (for example a slightly longer neck) and then survived to pass on its genes because it was better adapted to its surroundings (in the case of a longer neck due to being able to reach higher food on trees) that then the offspring of this animal would have the same traits until they became widespread and accentuated in a species.
Geographically isolated and without competition from similar species, these finches developed distinctive anatomy (particularly beak size and shape) and behaviors, with each species exploiting a unique feeding niche. The bill is adapted in the different species for different purposes, such as crushing seeds, pecking wood, and probing flowers for nectar. The woodpecker finch, Cactospiza pallida, an insect-eater, holds twigs and cactus spines in its beak to fish out larvae in tree cavities. Darwin proposed that the Galapagos finches evolved on the islands from a single species of finch from mainland South America. Modern methods of DNA (genetic) analysis have confirmed his insight. Darwin's finches are classified in three genera of the phylum chordata, subphylum Vertebrata, class Aves, order Passeriformes, family Fringillidae, subfamily Geospizinae.
Darwin observed that the small brown birds on the Galapagos Islands differed in the shape of their?
beaks
Describe how finches of the Galapagos Islands adapted over time?
it has adapted a long neck to reach higher plants and the galapogos tortoise also can go up to a year without water because it can store water just like a camel because it lives in the drier part of the galapogos islands
