In this position, she presents the maximum cross-sectional area and thus maximizes the air-drag force on her. Proposals that one type of animal, even humans, could descend from other types of animals, are known to go back to the first pre-Socratic Greek philosophers. Which of the following is REQUIRED for the pricess of evolution by natural selection to occur? It takes a long time for an individual to adapt to its environment. 1. D) amino acids d) No, species do not change even after many generations, so individuals of the same species would not look different. Humans rely on other organisms for survival; however, all other organisms would be better off without humans. Lore
You'll get a detailed solution from a subject matter expert that helps you learn core concepts. The light moths declined in number and the dark colored moths increased in number. a. the development of traits that organisms need in order to become more complex b. gene changes in populations over many generations c. the change that occurs in individuals as they try to survive in their environment d. the. The outcome of each genetic bird recipe is a capuchino finch that looks differentone species with a black throat and gray cap, another with a white throat and gray cap. Speciation is the process by which new species form. Which of the following is REQUIRED for the process of evolution by natural selection to occur?Offspring must be similar to their parents due to share genes.There must be a sudden environmental change.There must be a predator preying on the species.One or more species must have recently been introduced to the region.Q6.7. Pellentesque dapibus efficitur laoreet. The pigweed has evolved to withstand the Roundup. Are 2 methylpentane and 3 methylpentane position isomers? Lorem ipsum dolor sit amet, consectetur adipiscing elit. Natural Selection is an example of a mechanism of evolution. In Module 2 we will dive deep into 3 different AI writing programs to see how each one works and how they can best serve you in your writing endeavors. b. Evolution only occurs in a very large gene pool. While webbed feet were evolving in ancestral ducks, with each generation:Most ducks had about the same amount of webbing on their feet as their parents.Most ducks had more webbing on their feet than their parents.Most ducks had less webbing on their feet than their parents.The amount of webbing on ducks feet had no relationship with the amount their parents had.Q6.9. _______ among populations can keep them similar to one another. 2. Createyouraccount. To put this another way: all humans have the same genes, yet we do not look alike. The descendants would look different from the original individuals in some ways, and they would look the same in some ways. While webbed feet were evolving in ancestral ducks, with each generation: Most ducks had about the same amount of wobbing on their feet as their parents. New species can eventually emerge with all these new adaptations over generations. A. Pellentesque dapibus efficitur laoreet. How does competition among humans differ from competition in other animal species? Consider also that the environment that this organism lives in changes for the worse. e. all living organisms, with just a few exceptions. Yes, some individuals with certain traits are more. Was the final answer of the question wrong? Why do humans share lots of DNA with both rats and bananas when each of these are very different things? \\ do not interbreed extensively. Considering chimpanzees and humans share 90% of the same DNA, why can't they breed together? Any action you may take upon the information you find on this website is strictly at your own risk. What are selection and genetic drift, and how are they different from each other? From the Autumn 2017 issue of Living Bird magazine. One species might have trills in different places, another song might be buzzy. Which kinds of animals are most different from each other: humans or chimpanzees? Genetic variation within a species can result from a few different sources. This is a question that has been debated for many years. The latest findings, published in the journal Science Advances, suggest the differences may depend on just a few genes with an outsized role in the evolution of the birds' appearance. A species is a group of individual organisms that interbreed and produce fertile, viable offspring. c. natural selection. Yes, some individuals with certain traits are more likely to survive and pass those traits on to their offspring. A geographically continuous population has a gene pool that is relatively homogeneous. Pellentesque dapibus efficitur laoreet. Access to over 100 million course-specific study resources, 24/7 help from Expert Tutors on 140+ subjects, Full access to over 1 million Textbook Solutions. Could individuals of a species look different today chegg? Why would competition between two animals of the same species likely be more intense than competition between two animals of different species? You'll get a detailed solution from a subject matter expert that helps you learn core concepts. Genetic drift b. Gene flow c. Mutation d. Natural selection. Why do different genders of the same animal evolve differently? What is the reason for the phenotypic differences between individuals of the same species? races)? Nam lacinia pulvinar tortor nec facilisis. Be sure to discuss both the evolutionary implications/benefits of light skin pigmentation and dark skin pigmentation. 6. Why do many animals have different colored feet than the rest of their bodies? O There are some phenotypic differences among human populations that reflect adaptation to different environments. Which of the following is REQUIRED for the process of natural selection to occur? Individuals of the same species generally \\ experience prezygotic barriers to reproduction. Would you expect the DNA of the goat to be more similar to? b. just other multicellular animals. How is this best explained?Ducks with less webbing worked harder than ducks with more webbing to eat aquatic plants. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Why or why not? Why or why not? Why do human bodies look so different across the planet? A scientist is researching how to cure a type of blindness that is caused by a mutation in a gene. races)? The descendants would become a completely different species that would have no similarities to the original individuals. Could the stock market crash be prevented? Why or why not? Explain. Which form of gene technology is this an example of? Which of the following conditions would biologists say was required for the evolution of DDT resistance in a population? Explore Darwin's Theory of Evolution by Natural Selection. A researcher observed that lizards living in areas with predatory birds have longer horns than those in areas with no predatory birds. a) Yes, all individuals can change a little and pass those changes on to their offspring. Repeated divergent selection on pigmentation genes in a rapid finch radiation. If there is NO VARIATION in shell thickness within a population of snails, and no mutations occur, what happens to shell thickness in response to crab predation?Shell thickness does not evolve in the population.Shell thickness evolves for some snails in the population.Shell thickness increases for all snails in the population.Average shell thickness in the population evolves over several generations.Q6.2. Nam risus ante, dapibus a molestie consequat, ultrices ac magna. 1. In what ways is culture similar between human and nonhuman primates? Second, the two species would need to have a significant difference in their reproductive capabilities. b. If variations or mutations are extreme enough, new species can result. They were more muscular than we were and they had bigger brains than we did (or do today). To put this another way: all humans have the same genes, yet we do not look alike. A species is a population of plants or animals that can breed to produce offspring that can then produce offspring themselves. a. Is it a survivor bias? David N. Shier, Jackie L. Butler, Ricki Lewis, John David Jackson, Patricia Meglich, Robert Mathis, Sean Valentine, BioEffRad-StudyGuide2019-Section7- Models of. E) urea. These include the amount of genetic variation within a population, the number of evolutionary opportunities that a population has, and the number of genetic mutations that occur within a population. c. Its populations can interbreed. Humans shape their environment in ways that other organisms cannot. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Why is a convoluted brain better than a smooth one? Consider the following hypothetical scenario: An ancestral species of duck had a varied diet that included aquatic plants and terrestrial plants and insects. What is culture and how does culture differ between human and nonhuman primates? Merlin Bird ID Can Tell You, published in the journal Science Advances, Repeated divergent selection on pigmentation genes in a rapid finch radiation. Ducks are aquatic birds. Many generations later, almost all ducks had more webbing on their feet. These structures do not look alike and are not used in the same way, but their bones are similar. Why is it harder for human babies to be delivered than other animals? Why or why not? Learn about Charles Darwin's background, what theory he is known for, and what natural selection is. Donec aliquet. (a) Do humans experience interspecific competition? Do any of our fossil relatives or other species share some aspects of this unique set of characteristics? The bacteria have become resistant over several generations. All rights reserved. (a) What additional genetic factors increase the resemblance between siblings? 1. There is similar variety for wings and head color, creating an almost mix-and-match effect when the species are viewed side by side. In sympatric speciation, groups from the same ancestral population evolve into . Explain. Over time, the genetic makeup of the two resulting populations becomes more and more different, until each population becomes a separate species. Why does natural selection only act on heritable variation? The three conditions that must be met for evolution to occur by natural selection are that there must be variation, there must be selection, and there must be inheritance of variation. We can learn a lot from these instances of fast speciation, says Cornell Lab scientist Leonardo Campagna, who has studied these finches for 10 years. why did dinosaurs evolve earlier than humans? Skin color is not directly tied to race. AnswerGoat.com will not be liable for any losses and/or damages in connection with the use of the website. Anaximander of Miletus (c. 610546 BC) proposed that the first animals lived in water, during a wet phase of the Earth's past, and that the first land-dwelling ancestors of mankind must have been born in water, and only spent part of . What is the difference between genetic diversity and genetic variation? I've rounded off in many locations to ensure that the sum of allele frequencies and genotypes will be one and the number of bears will be a whole number. B. Could individuals of a species look different today than individuals of the same species did many generations ago? Explain! Explain the mechanisms of genetic variation. What would such an evolutionary development look like? For example, a shark uses its electrosensory and olfactory organs predominately to interact with its environment, whereas primates are heavily dependent upon vision. The correct answer is (c) Yes, some individuals with certain traits are more likely to survive and pass those traits on to their offspring. Yes, all individuals can change a little and pass those changes on to their offspring. The birds' beaks varied in size, with some individuals having slightly smaller beaks and others having slightly larger beaks. c. just other multicellular animals and plants. Explain why monotremes are unique mammals. It is reproductively isolated from other species. b. They would do this by breeding a Poodle with a Husky. Could pitcher plants genetically evolve or mutate to become similar to small carnivorous animals in the coming years (100, 200 or even 1,000)? The most complete fossil individual of this species is known as the 'Turkana Boy' - a well-preserved skeleton (though minus almost all the hand and foot bones), dated around 1.6 million years old. - Theory of Evolution & Natural Selection. Pellentesque dapibus, congue vel laoreet ac, dictum vitae odio. Humans share common biological constraints b. There is some debate over whether individuals or the population adapt to change. Scientists look for those rare instances when a species suddenly diverges, or radiates into multiple forms, each with a different appearance or behavior. What are the differences between a monkey and a human? b) Yes, some individuals can chang; Why didn't humans evolve to hibernate like many other mammals? Reproduction is the ability of an organism to create new offspring. For example, chimpanzees and humans, the skulls of which are shown in Figure 12.2. Why don't other animals have as many genetic mutations as humans? b) Yes, some individuals can change a little and pass those changes on to their offspring. Different finch species live on different islands. What species are humans today? a) Yes, all individuals can change a little and pass those changes on to their offspring. What are the general characteristics of animals? Calculate the concentration in units of ppb and determine whether the sample exceeds the legal limit of 10.0 ppb. Why or why not?Yes, all individuals can change a little and pass those changes on to their offspring.Yes, some individuals can change a little and pass those changes on to their offspring.Yes, some individuals with certain traits are more likely to survive and pass those traits on to their offspring.No, species do not change even after many How are they different? Which of the following is NOT an example of gene technology? Humans have about the same number of protein-coding genes as do animals such as tunicates that have a very simple body form and few neurons. copyright 2003-2023 Homework.Study.com. To test this hypothesis, the researcher tagged 20 lizards with long horns and 20 lizards with short horns in each of two locations: Desert Valley, where there are no predatory birds, and Cactus Corner, where there are predatory birds. The longer that two populations are kept from interbreeding, the: a. more recessive alleles will be expressed. Why or why not? Yes, all individuals can change a little and pass those changes on to their offspring. so you can get an accurate answer to your question. Do monkeys vary in similar ways? Get access to this video and our entire Q&A library, Human Evolution Lesson for Kids: Timeline & Stages. Is it through mutation? Individuals of this species varied in the amount of webbing in their feet, with some individuals having more webbing and some having less. Explain why only populations evolve but individuals do not. If humans evolved from a common ancestor we share with monkeys, why do we have such broad variations in physical features across our species (i.e. In evolutionary terms, thats life in the fast lane. The descendants would look the same as the original individuals because species do not change. These rocks were once below the ocean surface. Why does diversity between individuals and between species create problems for determining what is a species and what is a variant? What is the reason for the phenotypic differences between individuals of the same species? B. She couldn't decide if she wanted a Poodle or a Siberian Husky. By the year 2000, the graph shows the population of light colored moths significantly increasing. Can certain traits in a population change because the environment changes? B. organisms change by acquired characteristics. Could the story animal farm have taken place anywhere else? Why or why not? Could individuals of a species look different today than individuals of the same species did many generations ago? This can result from random processes called genetic drift, or a more adaptive mechanism called natural selection. Why did some primate species develop sexual swellings while others didn't? However, only around 1.2 million species have been identified and described so far, most of which are insects. Explain. Unlike Darwins finches, in which environmental conditions such as food supply rewarded birds with different beak shapes, the capuchino finches all eat the same type of food and live in grasslands scattered across South America. Similarities at the beginning of embryonic development imply they have common ancestors. Course Hero is not sponsored or endorsed by any college or university. In what ways is domestication (selection by humans) similar to natural selection, and in what ways is it different? Is it possible that two different species, either by chance or natural selection, evolve to be the same species? Could individuals of a species look different today than individuals of the same species did many generations ago? No, species do not change even after many generations, so individuals of the same species would not look different. Homo neanderthalensis ("Man from the Neander Valley"): Also known as Neanderthals, these humans lived in western Asia and Europe. Lovette. Question: could individual of a species look different today than individual of the same species did many generations ago? Why or why not? An ideal solenoid (N1N _ { 1 }N1 turns, length L1L _ { 1 }L1, radius r1)r _ { 1 } )r1) is placed inside another ideal solenoid (N2N _ { 2 }N2 turns, length L2>L1L _ { 2 } > L _ { 1 }L2>L1, radius r2>r1r _ { 2 } > r _ { 1 }r2>r1) such that the axes of the two coincide. How do changes in DNA affect changes in adaptations? If so, why did we evolve this way? All living species de. Their songs are different, too. Why is genetic variation within a species important to conservation? The amount of webbing on a duck's feet is a heritable trait. 2017. A head of broccoli today is not the same as a head of broccoli 70 years agothey're almost different species. How does genetic variation help a population survive in the face of changing, uncertain environments? What is a distinguishing factor that separates mammals from other animals? Learn about capuchino evolution in this short video and article from the New York Times. How does the human body's molecular system differ from dogs? B) not all mutations are beneficial. Donec aliquet. (I am of the assumption that changes in DNA spur the adaptations that take place--at least those through genetic mutation--and thus the adaptations, In what way is artificial selection different from natural selection? Discuss at least four characteristic traits of primates that other mammals do not share. Privacy Policy. How can this population be expected to change over several successive generations, if the relative fitness differences observed remain unchanged? Q5. Now, another group of South American finches known as capuchino seedeaters is helping scientists learn about how, and how fast, evolution works. Why are there such large differences in the diversity within a clade? A few years went by without much rain, and the only species of tree that survived had large seeds. Module 3: Fine-Tuning Your Results As you would correctly imagine, while AI generated text is often really good, it also gets things wrong at times. The 14 species of finches on the Galapagos Islands evolved from a single species that migrated to the islands seve Q: Q6.5. This textbook can be purchased at www.amazon.com. This so-called junk DNA does not actually create proteins, but may influence how nearby genes are used. What causes variation in a species? Could individuals of a species look different today than individuals of the same species did many generations ago? 6. After many generations, will all individuals in the population have the same adaptive trait? Nam risus ante, dapibus a molestie consequat, ultrices ac magna. How are animals that are different species able to reproduce? Doctors find that a certain type of antibiotic is no longer effective against the type of bacteria it used to kill. Provide an example of conve. (a) Two or more unrelated species change independently of each other and the environment in which they live (b) Two or more related species change to become less similar due to living in different environments (c) Two or more. The smallest and largest snails would be the most likely to reproduce. They are from different gene pools. This allows the farmers to spray their fields to get rid of weeds without harming their crops. It is their physical features and anatomical parts. This changed the way that humans reproduced and evolved, which in turn, changed the way that humans look today. Q6.5. The 14 species of finches on the Galapagos Islands evolved from a single species that migrated to the islands several million years ago. 1) Yes, all ind. Be s. Explain why differences in skin pigmentation in human populations can be explained by the theory of evolution and natural selection. One or more species must have recently been introduced to the region. Do different species start with a genetic mutation? Happy face spider photos courtesy of Rosemary Gillespie, UC . Thoroughly describe an example of each mechanism. Could individuals of a species look different today than individuals of the same species looked many generations ago? Where the Dark-throated Seedeater has a black throat, for instance, the Marsh Seedeaters throat is white and the Tawny-bellied Seedeaters is the same tawny color as its belly. TUCKER CARLSON: One thing we have learned after many years in the news business is that every once in a while you've got to eat some crow and admit that despite your best intentions, you were . Members from different species are not able to give rise to viable offspring. If two species look alike, live in different places, but are not genetically related, it is probably a case of _______. She returned every week for 12 weeks to measure survival of tagged lizards. The new study identified all the points of difference for nine capuchino species, with a surprising result. Explain your answer. Give an example of how these mechanisms have impacted evolution in a species. For example, if a species of fish was only exposed to freshwater, they might look different than if they were exposed to saltwater. This is because the different environments would cause different changes in the fish's appearance. Yes, some individuals with certain traits are more likely to survive and pass those traits on to their offspring. Explain some reasons why humans have been able to expand in number and distribution to a greater extent than most other animals. The left arm of a human, the front flipper of a seal, the wing of a bird, and the wing of a bat have the same structure and order of bones. Yes, some individuals can change a little and pass those changes on to their offspring. Could two genetically perfect humans have all the genetic diversity needed for a species? When I was studying nutrition and soil management over 20 years ago, produce could already be classified as "franken-food". How can everyone alive today be the same species if not all populations today have Neanderthal DNA while some people have up to about 4% Neanderthal DNA? Conditions have changed in significant ways everywhere on earth, with some of these changes happening suddenly and others more gradually. What does this tell Scientists about Earth's past? Yes, when the environment changes, individuals with certain inherited traits survive and will be able to reproduce. All information of this website is published in good faith and for general information purposes only. In what ways is the human brain different from other species (non-primate and non-human primate)? c. more they will differ from one another in adaptations. O No, species do not change even after many generations, so individuals of the same species would not look different. In biology, what is an adaptation? offspring. Peppered moths have wings that vary in color, ranging from white to dark gray. In evolution, why is it important that individuals vary from each other? Why is it that humans have three different blood groups: A, B, and O? Propose an explanation for the return of the light-colored peppered moth population.