|What organism’s fossils would be most similar to modern day birds?||reptiles|
|What evidence would best support the extinction of a past species?||the disappearance of a species’ fossils|
How are fossils compared to one another?
The animals share a similar ancestor. How are fossils compared to one another for biological classification? … The fossils of both organisms show wings with similar bone structure.
Which evidence best supports the theory that many species of organisms have become extinct?
Which evidence best supports the theory that many species of organisms have become extinct? Current fossil records reflect only species that exist today. Radioactive dating of rocks provides evidence of extinct species.
Do fossils show links between species of the past and modern day species?
Fossils document the existence of now-extinct past species that are related to present-day species.
How do the similarities in the forelimb bones of humans dogs whales and birds support the theory of evolution?
These are called homologous structures. Since these structures are so similar, they indicate an evolutionary relationship and a common ancestor of the species that possess them. … When examined closely, the forelimbs of humans, whales, dogs, and bats all are very similar in structure.
Which is the best evidence for evolution?
Perhaps the most persuasive fossil evidence for evolution is the consistency of the sequence of fossils from early to recent. Nowhere on Earth do we find, for example, mammals in Devonian (the age of fishes) strata, or human fossils coexisting with dinosaur remains.
Which era can the oldest fossils be found?
The oldest is the Paleozoic Era, which means “ancient life.” Fossils from the Paleozoic Era include animals and plants that are entirely extinct (e.g., trilobites) or are rare (e.g., brachiopods) in the modern world.
What are 5 pieces of evidence that support the theory of evolution?
There are five lines of evidence that support evolution: the fossil record, biogeography, comparative anatomy, comparative embryology, and molecular biology.
What can scientists most conclude from fossil records?
What can scientists most likely conclude from fossil records? Extinction is common.
What are analogous structures?
Alternative Title: analogous structure. Analogy, in biology, similarity of function and superficial resemblance of structures that have different origins. For example, the wings of a fly, a moth, and a bird are analogous because they developed independently as adaptations to a common function—flying.
What are the 3 types of evolution?
shows the three main types of evolution: divergent, convergent, and parallel evolution.
How did modern day humans evolve?
KEY FACTModern humans originated in Africa within the past 200,000 years and evolved from their most likely recent common ancestor, Homo erectus. … It proposes that Homo sapiens evolved in Africa before migrating across the world.
What are theories of evolution?
In biology, evolution is the change in the characteristics of a species over several generations and relies on the process of natural selection. The theory of evolution is based on the idea that all species? are related and gradually change over time.
Which bones do humans and tetrapods share?
This 350 million year old animal, the first tetrapod, had limbs with one long bone (the humerus) attached to two other long bones (the radius and ulna). Its descendants, including whales, lizards, humans, and birds, as well as many others, inherited the tetrapod limb from this ancestor.
What do humans dogs birds and whales have in common?
For example, the bones in the appendages of a human, dog, bird, and whale all share the same overall construction (Figure 2) resulting from their origin in the appendages of a common ancestor. … Some examples of vestigial structures are wings on flightless birds, leaves on some cacti, and hind leg bones in whales.
Which animals use forelimbs?
Humans, whales, bats, eagles, lizards, frogs and chimpanzees are very different types of animals that use their forelimbs in very different ways. But beneath the skin, the forelimb bones of these animals are startlingly similar.