You are a scientist studying the relationships between lizards, penguins, and parrots. You examine the traits of each species and make the following character matrix: Таха Four Feathers Aquatic No body limbs temperature regulation Lizard 1 1 Penguin 1 1 Parrot 1 Based on this character matrix answer the following questions: a) The trait 'no body temperature regulation' is [ Select ] b) The most recent common ancestor of the three taxa had [ Select ] c) Which trait is a good synapomorphy for the penguin/parrot clade? [ Select ]

You are a scientist studying the relationships between lizards, penguins, and parrots. You examine the traits of each species and make the following character matrix: Таха Four Feathers Aquatic No body limbs temperature regulation Lizard 1 1 Penguin 1 1 Parrot 1 Based on this character matrix answer the following questions: a) The trait 'no body temperature regulation' is [ Select ] b) The most recent common ancestor of the three taxa had [ Select ] c) Which trait is a good synapomorphy for the penguin/parrot clade? [ Select ]

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter18: Introduction To Darwinian Evolution

Section: Chapter Questions

Problem 14TYU: EVOLUTION LINK Write short paragraphs explaining each of the following statements: (a) Natural...

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. The upper forelimbs of humans and bats have fairly similarskeletal structures, whereas the corresponding bones inwhales have very different shapes and proportions. However,genetic data suggest that all three kinds of organisms divergedfrom a common ancestor at about the same time. Which ofthe following is the most likely explanation for these data?(A) Forelimb evolution was adaptive in people and bats, butnot in whales.(B) Natural selection in an aquatic environment resulted insignificant changes to whale forelimb anatomy.(C) Genes mutate faster in whales than in humans or bats.(D) Whales are not properly classified as mammals.
Recent reconstructions of evolutionary history are often dependenton assigning divergence in terms of changes in amino acid ornucleotide sequences. For example, a comparison of cytochromec shows 10 amino acid differences between humans and dogs,24 differences between humans and moths, and 38 differencesbetween humans and yeast. Such data provide no information asto the absolute times of divergence for humans, dogs, moths, andyeast. How might one calibrate the molecular clock to an absolutetime clock? What problems might one encounter in such acalibration?
ln three to five sentences, construct an argument for the claim that natural selection leads to evolution. Provide evidence for this claim, and be sure to explain how an organism shows the four parts of the process of natural selection. You may use any organism with the exception of bacteria and antibiotic resistance.
When I first studied hominin evolution, they had found "Lucy", an Australopithecus afarensis, and everyone thought her species was an early ancestor of Homo sapien. The picture is much more complicated, with lots of hominins living in close proximity for millions of years...much different than our now singular species. Look at the phylogenetic tree and use it as a guide to briefly describe hominin lines in Africa up to Homo. Do not discuss Homo.Just discuss a sense that you generally can grasp what was going on in Africa with our Genus for 6 or 7 million years!
The upper forelimbs of humans and bats have fairly similar skeletal structures, whereas the corresponding bones in whales have very different shapes and proportions. However, genetic data suggest that all three kinds of organisms diverged from a common ancestor at about the same time. Which of the following is the most likely explanation for these data? Group of answer choices Forelimb evolution was adaptive in people and bats, but not in whales. Natural selection in an aquatic environment resulted in significant changes to whale forelimb anatomy. Humans and bats evolved by natural selection, and whales evolved by Lamarckian mechanisms. Genes mutate faster in whales than in humans or bats.
If mutations such as those of the Ubx gene candrastically change morphology in a single step,why do most evolutionary biologists maintainthat modification of existing traits and the evolution of novel characters have generally proceeded by successive small steps?
What two pieces of evidence support the claim that all life on Earth descended from a common ancestor?
What is an evolutionary tree? Is there a precise evolutionary tree known by science that explains the emergence and origin of every type of living being?
Do you think the human race is continuing to evolve in a Darwinian, genetic sense? Are the genes of our species changing? Do not just write "yes" or "no," but explain why you think so. In addition, include in your explanation of how the mechanisms of evolution, such as natural selection, would be at play.
Which of the following statements is NOT true about evolution? Group of answer choices A-Evolution has been supported by a mounting body of genetic evidence B-Humans share a recent common ancestor with other primates C-The main principle of the theory of evolution is the simple fact that humans evolved from monkeys D-The theory of evolution has been tested and subjected to verification through accumulated evidence (and has not been disproved) E-Evolution can be studied at the microevolutionary or macroevolutionary level
While the French biologist LaMarck was correct in proposing that evolution does occur, he believed that the long necks of giraffes evolved as generations of giraffes reached for ever higher leaves on the trees. Using these observations, LaMarck proposed the theory that evolution occurs due to the inheritance of characteristics acquired during an organism’s lifetime. From what you know about the scientific method, why is this incorrect?
Which of the following statements best explains the importance of sister taxa for understanding the evolution of ingroup taxa? A) The sister group informs of the likely state of the common ancestor of the ingroup. B) The sister group is composed only of ancestral characters representing a primitive taxon having ancestral states for all characters able to be studied. C) The sister group allows us to infer character state polarity in order to understand how character states have changed during evolution of the ingroup. D) A & B E) A& C F) All of the above.