Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Chapter 20, Problem 19CTQ
Dolphins and fish have similar body shapes. Is this feature more likely a homologous or analogous trait?
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Dolphins and fishes have similar body shapes. Is this feature more likely a homologous or analogous trait.
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Chapter 20 Solutions
Biology 2e
Ch. 20 - Figure 20.6 At what levels are cats and dogs...Ch. 20 - Figure 20.10 Which animals in this figure belong...Ch. 20 - Figure 20.11 What is the largest clade in this...Ch. 20 - What is used to determine phylogeny? mutations DNA...Ch. 20 - What do scientists in the field of systematics...Ch. 20 - Which statement about the taxonomic classification...Ch. 20 - On a phylogenetic tree, which term refers to...Ch. 20 - Which statement about analogies is correct? They...Ch. 20 - What do scientists use to apply cladistics?...Ch. 20 - What is true about organisms that are a part of...
Ch. 20 - Why do scientists apply the concept of maximum...Ch. 20 - The transfer of genes by a mechanism not involving...Ch. 20 - Particles that transfer genetic material from one...Ch. 20 - What does the trunk of the classic phylogenetic...Ch. 20 - Which phylogenetic model proposes that all three...Ch. 20 - How does a phylogenetic tree relate to the passing...Ch. 20 - Some organisms that appear very closely related on...Ch. 20 - List the different levels of the taxonomic...Ch. 20 - Dolphins and fish have similar body shapes. Is...Ch. 20 - Why is it so important for scientists to...Ch. 20 - Describe maximum parsimony.Ch. 20 - Compare three different ways that eukaryotic cells...Ch. 20 - Describe how aphids acquired the ability to change...
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- The wing of a bird and the arm of a human are examples of ______. a. vestigial structures b. molecular structures c. homologous structures d. analogous structuresarrow_forwardAccording to the cladogram, which is more closely related to the Sun bear: the Sloth bear or the Polar bear? Explain.arrow_forwardBirds evolved from a group of bipedal dinosaurs known as theropods. True or false?arrow_forward
- Referring to the tree below, which is an accurate statement about relationships? Land un World makes Chis parces Mums H aped a) A gorilla is equally related to a human and an orangutan. b) An orangutan is related to chimpanzees and orangutans but not humans. c) A gorilla is more closely related to an orangutan than a human. d) A gorilla is more closely related to a human.arrow_forwardHow does the amount of Neanderthal DNA in modern humans vary geographically? a. Individuals of European descent have the most Neanderthal DNA. b. The amount of Neanderthal DNA in modern humans is consistent across all populations. c. Individuals of African descent have the most Neanderthal DNA. d. Individuals of East Asian descent have the most Neanderthal DNA.arrow_forwardDid the Neanderthals and Denisovans mate with each other before their lineages died out?arrow_forward
- Why is it interesting that Homo luzonensis was found on an island? A. The islands only formed after Homo luzonensis became extinct, so Neanderthals must have put them on the island B. The islands were a few miles apart, and Homo luzonensis would have needed to either float by grabbing on a tree or make a raft C. The islands were a few miles apart, and Homo luzonensis clearly had to learn how to fly to get to them D. The islands were volcanoes when Homo luzonensis was alive, so it's unexpected that they were therearrow_forwardExplain how genetic data are consistent with the possibility that only male Neanderthals interbred with our ancestors.arrow_forwardBoth octopuses and cuttlefish have a single-lens eye. Their common ancestor also had a single-lens eye. What word describes the relationship between the octopus eye and the cuttlefish eye? a. homologous c. analogous b. vestigial d. convergentarrow_forward
- Is the frog an ancestor of humans? Explain.arrow_forwardWhat two species did early Homo sapiens live with during the end of the Pleistocene? A. Sahelanthropus tchadensis and Denisovans B. Neanderthals and Ardipithecus ramidus C. Neanderthals and Australopithecines D. Neanderthals and Denisovansarrow_forwardWhy would you expect a hybrid of Neanderthals and modern humans to have intermediate features?arrow_forward
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