Homework Answers
1.Microevolution is the change in allele frequencies that occurs over time within a population. This change is due to four different processes: mutation, selection (natural and artificial), gene flow and genetic drift.
So the best suited sentence corresponding to microevolution is "new species form due to climate change".
2. 2-->4-->3-->1
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Which of the following sentences best corresponds to microevolution? New species form due to climate change....
Climate change is a threat to the existence of many species.
QUESTION 2 Climate change is a threat to the existence of many species. Which of the following limits to natural selection hinders the adaptation of species to the new climate conditions? The developmental plans of plants and animals are too complex. They cannot cope with the warmer temperatures. Mutations happen so frequently that beneficial alleles change before natural selection can substantially increase their frequency Many species not have gene variants in their gene pool that are beneficial in higher temperatures. Climate change happens so...
A Case Study of Climate Change vs. Human Activity A case study by Sindya N. Bhango...
A Case Study of Climate Change vs. Human Activity A case study by Sindya N. Bhango suggested that human activity has had at least as much effect as climate change on the survival of animals on the Bahamian island of Abaco. Researchers looked at 10,000-year-old fossils found in an underwater cave on Abaco. They compared them with fossils from the island that date to 1,000 to 3,000 years ago, along with data from current vertebrate populations. The scientists found that...
5. Which of the following statements is true about the theory of evolution? The focus of...
5. Which of the following statements is true about the theory of evolution? The focus of the theory of evolution is to explain the origins of life. According to the theory of evolution, life evolved entirely randomly. The focus of the theory of evolution is to explain how life diversified from the first living cells. According the theory of evolution, only the strongest and toughest can survive. 6. Which of the following best explains our current understanding of microevolution? Neither...
heterozygote disadvantage Natural selection is the process by which organisms with the best adapted phenotype are...
heterozygote disadvantage Natural selection is the process by which organisms with the best adapted phenotype are selected for by environmental conditions. anthropogenic events such as the use of DDT heterozygote advantage Allelic frequencies can change due to selection or they may change due to genetic drift. environmental conditions The process of natural selection relies on the presence of of a gene within a population. genetic drift Deleterious alleles may persist in the population particularly if they confer a single allele...
1. Evolution is the change in the genetic makeup of a(n) a individual b. population c....
1. Evolution is the change in the genetic makeup of a(n) a individual b. population c. community d. ecosystem 2. Natural selection results in a. increased genetie variation b. a population that is better adapted to a future environment c. a population that is adapted to its current environment d. an increase in the size of a population 3. Which of the following is not requirement of natural selection? a characteristics of organisms are genetically determined b. more offspring are...
PERIODIC 24.17. In the r vs. K-selection classification, which of the following best describes an selected...
PERIODIC 24.17. In the r vs. K-selection classification, which of the following best describes an selected species? individuals grow larger live longer, reproduce later, and invest more resources into each offspring Individuals reproduce early and chen, maximizing the population growth rate individuals live longer and reproduce later but invest very little in offspring Individuals reproduce early and then and invest more resources into each offspring OPPORTUNISTIC G 0418 Recall Grime's life story classification, shown in simplified form in the figure...
1) A researcher discovers a new species of bacteria that obtains its energy from other organisms...
1) A researcher discovers a new species of bacteria that obtains its energy from other organisms and its carbon from the atmosphere. This species can be categorized based upon its mode of nutrition as a: chemoheterotroph, photoautrotroph, photoheterotroph, or chemoautotroph? 2) A colony of antibiotic-resistant bacteria is mixed with a colony of antibiotic-sensitive bacteria. After a few days grown in the presence of antibiotics, all of the bacteria are resistant to the antibiotic. Which of these is most likely to...
1. The patient with rifampin-resistant tuberculosis, what evidence indicated that the resistant strain evolved within the...
1. The patient with rifampin-resistant tuberculosis, what evidence indicated that the resistant strain evolved within the patients own lungs rather than being acquired from another individual? 2. beak size in the Galapagos finches evolved in response to the amount of rainfall, which changes ever year. How can the finches cope with this lack of consistency? What would happen if climate change causes a consistent increase in the amount of rainfall? 3. imagine a population of an organism where the selection...
1. Which of the following mutations could create a frameshift and change the sequence of a...
1. Which of the following mutations could create a frameshift and change the sequence of a protein? 1. A back mutation 2. Deletion of a base 3. Insertion of a base 4. A base substitution of C for A I 2. Which of the following is NOT common to ALL forms of speciation? Select one: a. Formation of a new species b. None, all of these are common to all forms of speciation c. Ecological isolation d. Limited gene flow...
Which example illustrates the difference between Lamarck's vs. Darwin's theories of how new species come from...
Which example illustrates the difference between Lamarck's vs. Darwin's theories of how new species come from existing species. A. Lamarck may have stated that with the rapid distance between pieces of ice in the arctic, polar bears would naturally be able to swim further than their parents would have, whereas Darwin would have said that the polar bears who could swim far enough would survive, those who could not would die. B. Lamarck may have stated that with the need...
A Case Study of Climate Change vs. Human Activity A case study by Sindya N. Bhango suggested that human activity has had at least as much effect as climate change on the survival of animals on the Bahamian island of Abaco. Researchers looked at 10,000-year-old fossils found in an underwater cave on Abaco. They compared them with fossils from the island that date to 1,000 to 3,000 years ago, along with data from current vertebrate populations. The scientists found that...
heterozygote disadvantage Natural selection is the process by which organisms with the best adapted phenotype are selected for by environmental conditions. anthropogenic events such as the use of DDT heterozygote advantage Allelic frequencies can change due to selection or they may change due to genetic drift. environmental conditions The process of natural selection relies on the presence of of a gene within a population. genetic drift Deleterious alleles may persist in the population particularly if they confer a single allele...
1. Evolution is the change in the genetic makeup of a(n) a individual b. population c. community d. ecosystem 2. Natural selection results in a. increased genetie variation b. a population that is better adapted to a future environment c. a population that is adapted to its current environment d. an increase in the size of a population 3. Which of the following is not requirement of natural selection? a characteristics of organisms are genetically determined b. more offspring are...
PERIODIC 24.17. In the r vs. K-selection classification, which of the following best describes an selected species? individuals grow larger live longer, reproduce later, and invest more resources into each offspring Individuals reproduce early and chen, maximizing the population growth rate individuals live longer and reproduce later but invest very little in offspring Individuals reproduce early and then and invest more resources into each offspring OPPORTUNISTIC G 0418 Recall Grime's life story classification, shown in simplified form in the figure...
1. Which of the following mutations could create a frameshift and change the sequence of a protein? 1. A back mutation 2. Deletion of a base 3. Insertion of a base 4. A base substitution of C for A I 2. Which of the following is NOT common to ALL forms of speciation? Select one: a. Formation of a new species b. None, all of these are common to all forms of speciation c. Ecological isolation d. Limited gene flow...
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