Why do distantly related species (such as ostriches, emus, and rheas) very different places sometimes share similar traits? * O They evolved from a recent common ancestor They can travel very long distances in a short period of time O The environments they live in are similar, so similar traits are selected

A вс D E F G scales fur/ scales spikes horns horns claws feathers hair a) Which trait(s) did the most recent common ancestor of dragons A and B have? [ [ Select ] b) Which trait(s) appear to be the result of convergent evolution? [ Select ] c) Which trait(s) does dragon D have? [Select ] d) Which taxa is most closely related to dragon B? [ Select ] f) True or false? The clade formed by dragons D, E, and their most recent common ancestor is monophyletic [ Select ] e) Which trait(s) did the most recent common ancestor of dragon species A and E have? [ Select ]

The assumption that it's possible to glean evidence of evolutionary changes in the deep past from fossil evidence, anatomical comparisons, and dating techniques is due to the law of uniformitarianism, which states: O The world operates by certain physical laws that have remained the same throughout time. O The Earth is uniformly covered in fossils. Time flows at a uniform rate on Earth. O All populations of living things change uniformly, at the same rate.

What is wrong with this statement: Birds evolved lighter bones to allowed them to fly and take advantage of open niches. All of the choices are true; none are false. It implies that the variation in the anatomy of birds did not come first, but rather the need did. It implies that there is an intent to evolution. It implies that adaptations evolve out of a need.

A synapomophy is a shared, derived characteristic. This differs from a symplesiomorphy which is a shared_________________ characteristic. Synapomorphie characteristics are used to identify animals that share a common ancestor. For example, _________________share four synapomophic characteristics including a post-anal tail, a _________________ pharyngeal slits, and a dorsal hollow_______________ chord. These characteristics are derived in the MRCA of chordates, but_______________ in mammals.

Based on this tree, which of the following is most accurate? Baboon Gibbon Orangutan Chimp Human O Gibbons represent a transitional group between baboons and orangutans O None of these statements are accurate O Baboons are the ancestral species of the remaining four taxa O Orangutans are more closely related to chimps than humans O Humans evolved from chimps

To test evolutionary hypotheses, you make a phylogeny of a group of organisms based on six traits. You suspect tree dwelling evolved to allow for nest building A В 4 C 1 2 E F 5 3 2 1= singing 2= nest-building 3= short legs J K 4 4 = hollow snout M 5= crest 9- N 6=tree dwelling a) Based on your phylogeny, did tree dwelling evolve to allow nest building? Explain your answer. b) Your friend wants to put all of the species that have short legs into a single taxonomic group. Is this a good taxonomic group? Explain your answer. CO

Can you please help answer this question?

This is a potential phylogenetic tree created by anthropologists at UC Berkeley.A-Ardipithecus ramidusB-Australopithecus anamensisC-Australopithecus afarensisD-Australopithecus africanusE-Paranthropus aethiopicusF-Paranthropus robustusG-Paranthropus boiseiH-Australopithecus garhiI-Homo rudolfensisJ-Homo habilusK-Homo ergasterL-Homo erectusM-Homo heidelbergensisN-Homo neanderthalensisO-Homo sapiens What kinds of evidence to you think anthropologists used to create this tree?