Biology: Concepts and Connections‚ 6e (Campbell) Chapter 9 Patterns of Inheritance Multiple-Choice Questions 1) Which of the following statements regarding domestic dogs is false? A) Dogs originated in East Asia. B) Dogs of different breeds can be identified through genetic analysis. C) Shar-pei and Akita are genetically very similar to the wolf. D) All dogs are descended from wolves. E) Humans have bred dogs for thousands of years. Answer: D Topic: Opening Essay Skill:
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Chapter 22 Natural selection: process in which organisms with certain inherited characteristics are more likely to survive and reproduce than are organisms with other characteristics Evolution: “descent with modification”; living species descend from ancestral species that differed from those that currently exist; change in genetic composition Taxonomy: a scientific discipline concerned with naming and classifying the diverse forms of life Fossils: preserved remains/impressions of an organism
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The many different (14) species of finches on the Galapagos Islands all evolved from one common ancestor. Once the population of finch got to a point where food was scarce and competition was causing many finches to die off‚ the need to evolve presented itself and one group of finches developed a broader beak for cracking seeds‚ and the niche of that particular finch changed from eating insects to eating seeds‚ so it allowed the two finches to coexist in the same ecosystem. 4. The levels of ecological
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legs and neck were fully extended. They were grayish black‚ with a hard shell covering on their back. The bony portion of the shell is covered with plates that are derivatives of skin and offer additional strength and protection. The tortoises have beak-like mouths‚ to help them snap off branches to eat. They have extremely long necks to reach taller branches. The Pinta Island Tortoise had scaly skin and thick toenails. They enjoyed mud bathing and wading into shallow pools of water. Pinta Island
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ventured out into many different species among the Galapagos Islands. Although there are a few variants of the finch that are not fit to cross the terrain‚ those who do‚ find themselves crossed between survival and competition. Between the two islands there are different food sources. The finches adapted to other birds taking on new roles and new ways to reach their food sources. The bird’s beaks allowed for
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Once upon a time‚ in a land not very far away‚ there lived a little girl named Nova Vedec‚ who lived with her dad‚ Niles Vedec. Anyone who had known the Vedec’s would tell you that they were quite a remarkable family. In fact‚ the Vedec’s family was full of scientists‚ and almost every single Vedec went into a field relating to it. Niles Vedec was especially entranced with the studies of fossils‚ and was a Paleontologist. It was one spring afternoon when little Nova came home from first grade and
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bill is yellow and the breast is gray. The female has a brown crown and a plain breast with a broad buff line over the eye. Be careful when identifying female House Sparrows because they may look similar to female House Finches. The female House Finch will have a stripped breast. The nesting habits of House Sparrows plays a significate role in the birds life and activities. Since these birds use the nest nearly year around. In spring and summer the birds use the nest for raising young‚ up to
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not millions of year previously. This influenced the ideas of Darwin greatly. During the explorations of The Beagle‚ Darwin discovered several different types of closely related finch species on the Galapagos Islands near South America. Although very similar‚ they had differing characteristics such as their beaks which he later concluded were adaptations for what food was accessible on specific islands that they inhabited. (Web ref 1). On Darwin’s return home he tried to explain his findings
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Bio152 Final Exam Review Essay Questions: Quest 1-2: Describe the fluid mosaic model of plasma membrane structure and list the major components of the membrane. How did scientists discover that the membrane was “fluid”? Explain one experiment that we discussed. • The fluid mosaic model of plasma membrane was the idea that lipids or proteins could move in the membrane laterally. The plasma membrane is made up of a phospholipid bilayer and controls a lot of what goes in and out of the membrane by the
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Natural Selection affects all the levels of taxonomic hierarchy from genes to groups of distantly related individuals. In order for this to occur‚ natural selection must produce adaptations that can be passed down through generations. Heritability‚ the phenotypic variance accounted for by genetics effects‚ must also be present (Latta‚ 2010). The levels of organization are bound together. Therefore‚ if one level has benefited by an adaptation caused by natural selection‚ then latter levels will
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