Homework Answers
1. stem reptiles is the common ancestor of all group organisms.
2. Icthyosaurs, pterosaurs, tyrannosaurs, sauropods and stegosaurs are the groups which became extinct without leaving progenies.
3.Birds, crocodilians, lizards, turtles and mammals are the groups which survived until present.
4. Lizards and snakes are most closely related , having a common ancestor and taken least time in evolution.
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1. Which Which group is the comm 2. group is the common ancestor of all the...
Answer and explain both please. Use this evolutionary tree representing the relationships among a group of...
Answer and explain both please.
Use this evolutionary tree representing the relationships among a group of vertebrates to answer questions 17 and 18. According to evolutionary theory, the letters at each branch point indicate the common ancestor for groups beyond that point. - Lung fishes Amphibians Mammals Lizards and snakes . Crocodiles - Birds 17. Which was the last (most recent) common ancestor of crocodiles and lizards/snakes? 18. Which of the following can be concluded from this evolutionary tree? A....
Exercise: Many older classifications are not monophyletic, and do not reflect the evolutionary relationships among species....
Exercise: Many older classifications are not monophyletic, and do not reflect the evolutionary relationships among species. As an introduction to phylogenetic classification, think about the tetrapods (animals with four legs). These animals have traditionally been classified into four groups, all of the same rank: Class Amphibia (frogs, salamanders, newts, etc.) Class Reptilia (snakes, lizards, crocodiles, turtles, etc.) Class Aves (birds) Class Mammalia (mammals) Reptiles possess a common ancestor with certain extinct amphibians, the birds are derived from a group of...
We commonly hear the word "reptile" used. Is Reptiles a Monophyletic group (represents all the descendents...
We commonly hear the word "reptile" used. Is Reptiles a
Monophyletic group (represents all the descendents of a single
ancestor) group in any of these trees? Explain your answer.
Crocodylia Aves Mammalia 10 Lepidosauria (Snakes/Lizards) Chelonia (Turtles) HAEMOTHERMIA (1-17) THECODONTIA (18-27) EUAMNIOTA (28-37) | AMNIOTA Fig. 1. The sister group relationships among the five assemblages of living amniotes advocated by Gardiner (1982; see also Løvtrup, 1985). The numbers of the synapomorphies Gardiner employed are displayed on the cladogram. Redrawn from...
Complete the following paragraph to describe the evolutionary lineage of reptiles. An ancestral reptile gave rise...
Complete the following paragraph to describe the evolutionary lineage of reptiles. An ancestral reptile gave rise to the amniotes that include today's reptiles one opening The group is not a natural group because it is not monophyletic amphibian Its many lineages forma group because they do not share a single common ancestor no openings The amniotes are divided into three lineages, each with a different type of opening in the skull Turtles are examples of which have in the skull...
According to this phylogenetic tree, which of the following is tru Lamprey Common ancestor Perch Salamander...
According to this phylogenetic tree, which of the following is tru Lamprey Common ancestor Perch Salamander Lizard Crocodile Pigeon Mouse Chimpanzee Mammals Amniotes Tetrapods Vertebrates Select one: a. More than 1 of these is true. b. Crocodiles are more closely related to mice than to salaman C. Crocodiles are more closely related to salamanders than to r x d. Salamanders are equally related to crocodiles & mice. e. Crocodiles are equally related to mice & salamanders. According to the phylogeny,...
Question 22 3 pts pterosaurs horned dinos duckbills crocs and relatives sauropods prosauropods dome heads armored...
Question 22 3 pts pterosaurs horned dinos duckbills crocs and relatives sauropods prosauropods dome heads armored dinos other theropods birds theropods (meat-eating dinosaurs) ornithischians (bird-hipped dinosaurs) saurischians (lizard- hipped dinosaurs) dinosaurs ornithodirans (archosaurs related to birds) archosaurs (ruling reptiles) Examine the phylogeny above, and answer parts A-C. Part A: Which two groups are the closest relatives of birds and other theropods? Part B: If you formed a group of "flying things" that included pterosaurs and birds, would that be a...
1. birds are most closely evolutionarily related to what other partially marine creatures? crocodilians marine iguanas...
1. birds are most closely evolutionarily related to what other partially marine creatures? crocodilians marine iguanas turtles 2. Marine mammals, and land mammals (including people), all share this characteristic that other animals don't have? ability to breathe air hair a bony skeleton 3. Which of the marine organisms are commercially harvested from the intertidal zone? mussels, none of them, snails, rockweed, oysters, all of them
Answer all the questions please Name Check Your Understanding 9.2 Date Section 1 Cladistics or Evolutionary tax...
Answer all the questions please
Name Check Your Understanding 9.2 Date Section 1 Cladistics or Evolutionary taxonomy? (Put a C or ET in the blanks.) Which school of systematics emphasizes: amount of change (evolution) of groups since the shared common ancestor. b recency of divergence from the common ancestor; branching patterns. 2 What are two characteristics that are primitive for mammals but derived for vertebrates? (Vertebrate groups are: fish, amphibians, reptiles, birds, and mammals.) (Hint: These would be features that...
For the four evolutionary processes below, indicate: how they affect allele and genotype frequencies within a...
For the four evolutionary processes below, indicate: how they affect allele and genotype frequencies within a population, whether or not these effects are random, and how they affect differentiation between populations. Number your answers as indicated in the table below to indicate which part of this question you are answering: Process Within-population allele & genotype frequencies Random? Y/N Genetic differences between populations #1 Natural Selection Genetic Drift Mutation #2 #5 #6 #7 #9 #10 #11 #3 Migration between populations #4...
in the treee below, assume the most recent common ancestor to all the animals listed had...
in the treee below, assume the most recent common ancestor to
all the animals listed had a long tail, ears, external testes, and
fixed claws. based on the info in the tree, what traits does a seal
have? (picture below)
Select all the ways animals are different from plants. animals are heterotrophs animals are autotrophs animals have sexual reproduction animals are mostly mobile at some life stage QUESTION 2 In the tree below, assume the most recent common ancestor to...
Answer and explain both please.
Use this evolutionary tree representing the relationships among a group of vertebrates to answer questions 17 and 18. According to evolutionary theory, the letters at each branch point indicate the common ancestor for groups beyond that point. - Lung fishes Amphibians Mammals Lizards and snakes . Crocodiles - Birds 17. Which was the last (most recent) common ancestor of crocodiles and lizards/snakes? 18. Which of the following can be concluded from this evolutionary tree? A....
Exercise: Many older classifications are not monophyletic, and do not reflect the evolutionary relationships among species. As an introduction to phylogenetic classification, think about the tetrapods (animals with four legs). These animals have traditionally been classified into four groups, all of the same rank: Class Amphibia (frogs, salamanders, newts, etc.) Class Reptilia (snakes, lizards, crocodiles, turtles, etc.) Class Aves (birds) Class Mammalia (mammals) Reptiles possess a common ancestor with certain extinct amphibians, the birds are derived from a group of...
We commonly hear the word "reptile" used. Is Reptiles a
Monophyletic group (represents all the descendents of a single
ancestor) group in any of these trees? Explain your answer.
Crocodylia Aves Mammalia 10 Lepidosauria (Snakes/Lizards) Chelonia (Turtles) HAEMOTHERMIA (1-17) THECODONTIA (18-27) EUAMNIOTA (28-37) | AMNIOTA Fig. 1. The sister group relationships among the five assemblages of living amniotes advocated by Gardiner (1982; see also Løvtrup, 1985). The numbers of the synapomorphies Gardiner employed are displayed on the cladogram. Redrawn from...
Complete the following paragraph to describe the evolutionary lineage of reptiles. An ancestral reptile gave rise to the amniotes that include today's reptiles one opening The group is not a natural group because it is not monophyletic amphibian Its many lineages forma group because they do not share a single common ancestor no openings The amniotes are divided into three lineages, each with a different type of opening in the skull Turtles are examples of which have in the skull...
According to this phylogenetic tree, which of the following is tru Lamprey Common ancestor Perch Salamander Lizard Crocodile Pigeon Mouse Chimpanzee Mammals Amniotes Tetrapods Vertebrates Select one: a. More than 1 of these is true. b. Crocodiles are more closely related to mice than to salaman C. Crocodiles are more closely related to salamanders than to r x d. Salamanders are equally related to crocodiles & mice. e. Crocodiles are equally related to mice & salamanders. According to the phylogeny,...
Question 22 3 pts pterosaurs horned dinos duckbills crocs and relatives sauropods prosauropods dome heads armored dinos other theropods birds theropods (meat-eating dinosaurs) ornithischians (bird-hipped dinosaurs) saurischians (lizard- hipped dinosaurs) dinosaurs ornithodirans (archosaurs related to birds) archosaurs (ruling reptiles) Examine the phylogeny above, and answer parts A-C. Part A: Which two groups are the closest relatives of birds and other theropods? Part B: If you formed a group of "flying things" that included pterosaurs and birds, would that be a...
Answer all the questions please
Name Check Your Understanding 9.2 Date Section 1 Cladistics or Evolutionary taxonomy? (Put a C or ET in the blanks.) Which school of systematics emphasizes: amount of change (evolution) of groups since the shared common ancestor. b recency of divergence from the common ancestor; branching patterns. 2 What are two characteristics that are primitive for mammals but derived for vertebrates? (Vertebrate groups are: fish, amphibians, reptiles, birds, and mammals.) (Hint: These would be features that...
For the four evolutionary processes below, indicate: how they affect allele and genotype frequencies within a population, whether or not these effects are random, and how they affect differentiation between populations. Number your answers as indicated in the table below to indicate which part of this question you are answering: Process Within-population allele & genotype frequencies Random? Y/N Genetic differences between populations #1 Natural Selection Genetic Drift Mutation #2 #5 #6 #7 #9 #10 #11 #3 Migration between populations #4...
in the treee below, assume the most recent common ancestor to
all the animals listed had a long tail, ears, external testes, and
fixed claws. based on the info in the tree, what traits does a seal
have? (picture below)
Select all the ways animals are different from plants. animals are heterotrophs animals are autotrophs animals have sexual reproduction animals are mostly mobile at some life stage QUESTION 2 In the tree below, assume the most recent common ancestor to...
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