2. A trait with a genetic basis that increases the fitness of an individual with the trait in a particular environment, compared to individuals lacking the trait. Similarities at the beginning of embryonic development imply they have common ancestors. Why is it that a population is the unit of evolution rather than the individual? a. weather. 2) The biological species concept. 1. Which genes are different among species is more important than just the number of genes that are different., Available for everyone,funded by donors like you. What are the 2 main reasons for variation between organisms of the same species? Course Hero is not sponsored or endorsed by any college or university. Are DNA mutations and natural selection two different mechanisms of evolution? All rights reserved. Lorem ipsum, amet, consectetur adipiscing elit. b. Evolution only occurs in a very large gene pool. why or why not? Could a solenoid suspended by a string be used as a compass? B) glucose Is it possible for two different genes to imply different phylogenetic relationships among a group of species? Selection is the way that different traits affect an organism's ability to survive and reproduce. Scientists look for those rare instances when a species suddenly diverges, or radiates into multiple forms, each with a different appearance or behavior. After many generations, will all individuals in the population have the same adaptive trait? To put this another way: all humans have the same genes, yet we do not look alike. Drought caused plants to die. Question: Q6.4. a) Variation b) Normalization c) Extinction. Was P. robustus a human? It's very important, and theoretically you could have a race where everyone has the same genotype for physical appearance. Could individuals of a species look different today than individuals of the same species did many generations ago? This is where terms like 'heterozygous' come into play. \\ e. They are the same species and a. Why is it that humans have three different blood groups: A, B, and O? 11 months ago, Posted 0.48. Could two genetically perfect humans have all the genetic diversity needed for a species? Explain how animal behaviors, including human behaviors, are governed by genetic inheritance. Why is it harder for human babies to be delivered than other animals? Why don't other animals have as many genetic mutations as humans? 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 . During the Industrial Revolution through the mid-20th century, factories and power plants, which burned coal, produced large quantities of soot and smog. Q6.6. B. organisms change by acquired characteristics. No, species do not change even after many generations, so individuals of the same species would not look different. How is this best explained? What is the difference between humans and chimps? a. How can this population be expected to change over several successive generations, if the relative fitness differences observed remain unchanged? The 14 species of finches on the Galapagos Islands evolved from a single species that migrated to the islands seve Q: Q6.5. This problem has been solved! DDT is an insecticide that was used extensively in the mid-1900s to kill mosquitoes. Explain. 2007-2023 Learnify Technologies Private Limited. How is knowing how an animal develops important to determining its common ancestor? Using one of these four ideas, explain why you do not look like another person in this room. Why or why not? How do changes in DNA affect changes in adaptations? Why do different genders of the same animal evolve differently? Why do humans, animals, and plants have to evolve reproductive function? Consider the following hypothetical scenario: An ancestral species of duck had a varied diet that included aquatic plants and terrestrial plants and insects. Explain why the visual perceptions that other animal have and why that sensory input would vary and be differ from our own vertebrate visual system. 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 p2: homozygous dominant (sad) 2pq: heterozygotes (sad) Q2 heterozygous recessive (happy) This is an scenario of what could occur. Because so much of each species genome is the same, Campagna says its easier to find the minute differences, making them great subjects for study. Why are animals shaped differently in cooler climates than in warmer ones? (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. Why is it that physical distinction between genders is more evident in humans than it is in other animals, say, a cat? How similar were humans 2,000-3,000 years ago compared to us now in appearance and genetics? Gene flow, the movement of alleles across a species' range, is relatively free because individuals can move and then mate with individuals in their new location. 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. There is similar variety for wings and head color, creating an almost mix-and-match effect when the species are viewed side by side. a) Yes, all individuals can change a little and pass those changes on to their offspring. Q6. Discuss at least five aspects/qualities/traits of non-human primates that are similar and/or different from humans. The bacteria have become resistant over several generations. b) Yes, some individuals can chang; Why didn't humans evolve to hibernate like many other mammals? It is their physical features and anatomical parts. How are humans related to primates? Consider a population that lacks variation and no individual has any advantageous traits. The correct answer is (c) Yes, some individuals with certain traits are more likely to survive and pass those traits on to their offspring. What are the noteworthy differences between the two? How does evolution occur in a species? Many years ago, more than 13 different species of birds migrated to the islands. O No, species do not change even after many generations, so individuals of the Posted Donec aliquet. How are humans able to affect and alter the phenotypes of other organisms through artificial selection? (a) Do humans experience interspecific competition? What are the 2 main reasons for variation between organisms of the same species? Right now, theyre considered separate species because the color and song of males keep them from widely interbreeding. The existence of play in non-human animals is a direct challenge to old-fashioned scientific ideas. Substances larger than ________ are normally not allowed to pass through the filtration membrane. C. Variatio. Why or why not? Its possible that in these rapid radiations, whats changing is when and how much of these ingredients are being added.. B. Our experts can answer your tough homework and study questions. a. This so-called junk DNA does not actually create proteins, but may influence how nearby genes are used. The three conditions for natural selection are variation, selection, and reproduction. 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 generations, so individuals of the same species would not look different Submit. 6. Why or why not? 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. Why or why not? How do modern biology, evolution, and natural selection explain why there are differences in innate aptitude in animals (such as there are humans who are smarter than others, some are more artistic than others, etc.)? Near industrialized areas, black powder covered surfaces, including the moth habitat. Why are there such large differences in the diversity within a clade? She couldn't decide if she wanted a Poodle or a Siberian Husky. Peppered moths have wings that vary in color, ranging from white to dark gray. Why or why not? Choice (d) is incorrect because it would be possible for this species to evolve over time. No, species do not change even after many generations, so individuals of the same species would not look different. Could the story animal farm have taken place anywhere else? This can result from random processes called genetic drift, or a more adaptive mechanism called natural selection. Reproduction is the ability of an organism to create new offspring. a) Yes, all individuals can change a little and pass those changes on to their offspring. Current forms could continue to diverge into ever more distinct species or they could collapse back into one or a few species through hybridization or extinction. Yes, some individuals can change a little and pass those changes on to their offspring. Ecologists estimate the size and density of populations using quadrats and the mark-recapture method. Campagna thinks that force comes from females as they choose among competing males based on color and song. Do any of our fossil relatives or other species share some aspects of this unique set of characteristics? 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. Pellentesque dapibus, congue vel laoreet ac, dictum vitae odio. Could individuals of a species look different today than individuals of the same species did many generations ago? Explain. The Cornell Lab will send you updates about birds, birding, and opportunities to help bird conservation. Get access to this video and our entire Q&A library, Human Evolution Lesson for Kids: Timeline & Stages. No, species do not change even after many generations, so individuals of the same species would not look different. This textbook can be purchased at www.amazon.com. Could individuals of a species look different today than individuals of the same species did many generations ago? 1. Which of the following is not part of how we define a species? What is an example of a genetic mutation that created a new species in the modern era that humans have documented? a) Yes, all individuals can change a little and pass those changes on to their offspring. A. no way to pass environment or acquired characteristics to offspring, only genes. A few years went by without much rain, and the only species of tree that survived had large seeds. This is because the mutation would be passed down to future generations, and over time, the appearance of the species would change. Over time, the genetic makeup of the two resulting populations becomes more and more different, until each population becomes a separate species. We will look at multiple ways to update your . Could you please spare some time meaning? AnswerGoat.com will not be liable for any losses and/or damages in connection with the use of the website. You'll get a detailed solution from a subject matter expert that helps you learn core concepts. 1. a) There is no difference; both have caused evolution throughout the history of life on earth b) Artificial selection applies to changes in domestic animals only, while natural sele. In Europe, dark peppered moths were rare before the 1850's and light colored moths were plentiful. What is the change in a species over time or the process of biological change by which descendants come to differ from their ancestors called? Why has nature decided to create exactly two genders (for humans and animals) and not 3 or 5 for example? Why or why not? A surprisingly small population could save our species. 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. Do different species start with a genetic mutation? In Europe, dark peppered moths were rare before the 1850's and light colored moths were plentiful. Exposure to DDT caused specific, nonrandom mutations for DDT resistance within the population. B. Explain. A species of bird ate many types of seeds, each type coming from a different species of tree. What is the difference between genetic diversity and genetic variation? B) not all mutations are beneficial. How is this best explained?Ducks with less webbing worked harder than ducks with more webbing to eat aquatic plants. A species is often defined as a group of individuals that actually or potentially interbreed in nature. According to the diagram, which of the following statements is true? Biologists believe that new species evolve from existing species by a process called natural selection. What caused us to become so different? Could the us have to maintain neutrality in ww1? Over more recent history, during the last 10,000 years, there have been significant changes for humans to . What caused us to become so different? How are humans evolving today? Which adaptation described below probably does not protect the plant from being eaten by herbivores? You'll get a detailed solution from a subject matter expert that helps you learn core concepts. There are at least 4 different ways that humans have genetic variation, a. Discuss both the evolutionary implications/benefits of light skin pigmentation and dark skin pigmentation. What is a distinguishing factor that separates mammals from other animals? The current 13 finch species are the only species that survived. D. modifications in an individual are caused. The male finches are the same shape and size but wear different combinations of about five colors. As in all species, there is variation among individual human beings, from size and shape to skin tone and eye color. c. A change in heritable traits over time occurs at. a. populations; individuals b. genes; traits c. plants; animals d. traits; genes. The amount of webbing on a ducks feet is a heritable trait.Q6.8. Why did monkeys and lions evolve differently in the same environment? All humans carry the same genes. Why do plants and animals differ with regards to their development and how, Theories about why human universals exist suggest all of the following except: a. Course Hero is not sponsored or endorsed by any college or university. Here's how it works. why or why not? It was very effective at first, but after a few decades DDT became less effective at killing mosquitoes because many populations had evolved resistance to DDT. Select the correct statement(s) that justifies how he arrived at this conclusion. Genetic drift b. Gene flow c. Mutation d. Natural selection. Eric Rieger 0:00 Hello gut check project fans and KBMD Health family, I hope that you are having a great day today to host Eric Rieger soon to be joined by my other host, Dr. Kenn c)Yes, some individuals with certain traits are more likely to survive and pass those traits on to their offspring. Our experts can answer your tough homework and study questions. Be as specific as possible. This site is using cookies under cookie policy . The number of this type of rodent will decrease. Submit Q6.6. What is convergent evolution? C. Variatio. or nec facilisis. Species have changed and continue to change over time because of their environment, genetics, and reproduction. Yes, some individuals can change a little and pass those changes on to their offspring. What are they doing that causes a shift in the gene frequencies for "desirable" traits? Could a roman legion defeat a medieval army? Are humans subject to the same pressures of natural selection as other organisms? b) Yes, some individuals can chang; Compared to sexual reproduction, asexual reproduction _____. Pellentesque dapibus efficitur laoreet. A major difference among finch species is in their beaks: both size and shape vary greatly.Assume that a population of one of these finch species is undergoing evolution by natural selection with respect to beak size and shape. Pellentesque dapibus efficitur laoreet. 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. Learn about Charles Darwin's background, what theory he is known for, and what natural selection is. Yes, some individuals with certain traits are more likely to survive and pass those traits on to their offspring. 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. A. If variations or mutations are extreme enough, new species can result. The central ideas of evolution are that life has changed over time and different species share common ancestors. Q6.5. A disease attacks those plants and wipes them out. It is reproductively isolated from other species. Over time, the appearance of a species can change through evolution. Take note of any potential side effects associated with these supplements too - some ingredients could cause allergic reactions or digestive problems if taken in excess amounts, so . Fontana, P.L. Q6.5. There must be a sudden environmental change. How genetically different must a mutated individual be to be considered a different species? Discover when homo sapiens arrived and their hominid ancestors, such as australopithecines and Homo erectus.