According to this tree, turtles are more closely related to mammals than to birds." This statement is…   ... FALSE because turtles are much more primitive than mammals.   ... TRUE because turtles are closer to mammals in the tree.   ... TRUE because the ancestor of turtles (W) is connected to the ancestor of mammals (N) whereas the ancestor of birds (P) is separated by one ancestor (C).   ... TRUE because turtles share common ancestor W with mammals.   ... FALSE because turtles share a more recent common ancestor with birds than with mammals.

According to "Our Earliest Ancestors", why can’t scientists just do DNA analysis on these fossil hominins to determine if they are a separate species and possibly what species they belong to?    A.The fossils would need to be in a -5 degree Celsius environment to prevent DNA from degrading B.The DNA of fossil hominins is too similar to modern humans, making it difficult to distinguish between them. C.Scientists can't perform DNA analysis on fossil hominins because the fossils have been contaminated with modern human DNA over the years, making it impossible to isolate the ancient genetic material. D.The technology for extracting DNA from fossils hasn't been developed yet

What is plausible evidence supporting the hypothesis that birds evolved from dinosaurs? Please choose the best option. a) Dinosaurs and birds are both predatory.b) Fossilized transitional forms are discovered that possess features of birds and dinosaurs yet are difficult to classify into either group.c) The wing structure of a bird is similar to a dinosaur.d) Bird fossils can be found alongside dinosaur fossils.

Eutheria PLACENTALS THERIANS MONOTREMES Metatheria MARSUPIALS E iv 89 64 81 54 Human Chimpanzee Gorilla Orangutan Macaque Marmoset Tarsier Galago Mouse Lemur Wallaby Dolphin Tree Shrew Squirrel Horse Dog Pig Alpaca Cat Cow Sloth Opposum Rabbit Fruit bat Echolocatin Hyrax Elephant Armadillo Platypus

Ornithopods and ceratopsians are characterized by numerous instances of convergence. Which of the following is NOT an example of convergence in (at least some members of) these groups? Select one: a. Some members of both groups evolved dental batteries to help them grind food more effectively. b. Both had bipedal ancestors, but independently became large and (at least partially) quadrupedal. c. Both groups independently lost their lower front teeth. d. Both evolved elaborate ornamentation (crests, frills, etc.) on their heads.

Which of the following is supported by molecular phylogenetic studies?    a.) Lobe-finned fish are more closely related to humans than to other fish.            b.) Lobe-finned fish are more closely related to other fish than to humans.            c.) Lobe-finned fish are more closely related to other fish than to humans.            d.) All of the answers are correct            e.) Lobe-finned fish are tetrapods.

Some fish in a murky underground lake have lighter scales than the others. this makes it slightly harder for the lighter fish to escape detection by predators, but most light-colored fish live long enough to reproduce. a natural event separates the dark-scaled fish from their light-scaled cousins, and as a result, a new species of dark-scaled fish emerge. Which statement accurately describes the scenario? The fish survived because of an inheritable advantage. The fish experienced an evolutionary change because of genetic drift. The fish experienced an evolutionary change because of natural selection. The fish survived because of a non-genetic advantage.

Evidence suggest that feathers originally evolved for some function other than facilitating flight. This implies that (choose the best answer): a) Feathers are not currently an adaptation for flight. b) There was negative frequency dependent selection for feathers. c) Adaptations can evolve via the modification of pre-existing structures for a new function. d) Feathers arose via acclimatization. e) Natural selection anticipates future need and directs evolution accordingly.

The name for the monophyletic group of animals that includes all reptiles, mammals, birds, and amphibians is the ----- . This group is characterised by the evolution and shared presence of  ----- . However, some members of this group do not possess this feature because of a process called  -----  loss. Snakes are famously legless reptiles, but other reptiles have also lost their limbs to varying degrees. Within the family ---- , we see species that have no limbs and some that have only hind limbs. In the genus ---- we can find species that have fully pentadactyl limbs, as well as those with only 3, 2, or 1 --- per foot.

Species have traditionally been characterized as "primitive " and "advanced". For example,mosses were considered to be primitive,  and flowering plants advances;crocodiles were primitive and mammals were advanced.Why do most biologist today think it is incorrect to refer to any modern species as primitive?