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2020 Online Discussion B. Darwin's Theory Warm-Up Active Developing the Theory of Evolution WARM-UP What was Charles Darwin's contribution to the theory of evolution? O Charles Darwin was the first to express the belief that all living things are related. Charles Darwin believed that organisms had a goal to adapt and did so through the inheritance of acquired traits. Charles Darwin introduced the idea that organisms better adapted to their environment would tend to survive, reproduce, and increase in number. Charles Darwin developed the theory of population growth. DONE O Intro Activity DII 96 2, or go

Please do all. Choices are the same for all

. The Process of Evolution by Natural Selection – Be able to explain the process of evolution by natural selection as it applies to a specific living thing using the outline below: Natural variations caused by random mutations (adaptations) in DNA exist within populations. Those with helpful adaptations survive an environmental change (maybe a predator.) The survivors breed, passing on the inherited mutation (adaptation) to offspring. The resulting population has more of the successful inherited mutation (adaptation) than the original population. Phylogenetic Trees Infer evolutionary relationships of living things by interpreting phylogenetic trees. Know the divisions of hierarchical classification. (DKPCOFGS) c.  Differentiate between homologous and analogous (caused by convergent evolution) structures

In addition to evolution through vertical descent, evolutionary changes can also occur by horizontal gene transfer, and this process involves 1. mostly eukaryotic organisms. 2. competition 3. the transfer of genes from one organism to another one that is not its direct descendant and might even be from a different species. 4. a recent time in the history of life in our planet. 5. the transfer of genes from one organism to another one with a parent-offspring relationship.

What's In Let us review what you have learned from the previous module. Answer the activity below. ACTIVITY 1. Match Me! Directions: Match Column A with the correct answers in Column B by writing the number of your answers in the Answer Grid. If all your answers are correct, the sum when answers are added horizontally, vertically, or diagonally will give you a magic number. Column A Column B a. A process in which new species form b. Authored the Theory of Evolution by Natural Selection 1. Thomas Malthus 2. Hybrid sterility c. It occurs when a hybrid develops, matures but fails to reproduce increasing 3. Pre-mating isolating mechanism d. States that human 4. Jean Baptiste Lamarck population limits resources e. Species will different mating seasons f. Sought pieces of evidence for the idea of uniformitarianism due to 5. Temporal isolation not mate 6. Speciation

What's In Let us review what you have learned from the previous module. Answer the activity below. ACTIVITY 1. Match Me! Directions: Match Column A with the correct answers in Column B by writing the number of your answers in the Answer Grid. If all your answers are correct, the sum when answers are added horizontally, vertically, or diagonally will give you a magic number. Column A Column B a. A process in which new species form b. Authored the Theory of Evolution by Natural Selection 1. Thomas Malthus 2. Hybrid sterility 3. Pre-mating isolating mechanism c. It occurs when a hybrid develops, matures but fails to reproduce d. States population limits resources e. Species will different mating seasons f. Sought pieces of evidence for the idea of uniformitarianism that increasing human 4. Jean Baptiste Lamarck due 5. Temporal isolation not mate to 6. Speciation 1

genetics question on fixation

Enlarge Image 100 Mutation causes variation Conditions do not favor some mutations Survivors reproduce Change in conditions do not favor some traits Survivors reproduce 1) This model shows the process of natural selection on rabbits demonstrating variation in fur color over several generations. Using the model, what most likely led to the loss of white furred rabbits in the population? A) XB) C) The white rabbits did not reproduce fast enough to survive. White was a recessive trait and therefore not passed on to any offspring. The white fur was a favorable trait but was never prevalent in the population. The rabbits with white fur had less camouflage in D) the environment and were more easily preyed on by predators. 2) If this model continues, with no major changes to the environment, what do you expect to happen? XA) Rabbits will continue to get lighter over time.

Activity 4. Evolutionary Though Timeline thought. Write only the concise key concepts involved in each box. Directions: Complete the table below to summarize the history of evolutionary What I Have Learned W Pre-1800s Evolutionary thought of: Carolus Linnaeus on nomenclature and classification 1800s-1900 Thomas Malthus on Human Population 1800s-1900 (continuation) Georges Cuvier on Extinction James Hutton and Charles Lyell on Uniformitarianism Jean-Baptiste Lamarck on evolution Charles Darwin on Natural Selection

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25. Answer the following questions based on the facts and inferences related to natural selection that we discussed in class, as well as the simulations you performed with the Evodots lab. If individuals vary, and variation affects survival and reproduction, and variation is heritable: there will be natural selection resulting in evolution. there will be no natural selection, but there will be evolution due to natural selection. there will be natural selection, but it will not result in evolution. there will be no natural selection, and there will be no evolution due to natural selection.   24. Answer the following questions based on the facts and inferences related to natural selection that we discussed in class, as well as the simulations you performed with the Evodots lab. If individuals vary, and variation affects survival and reproduction, but variation is not heritable: there will be natural selection resulting in evolution. there will be no natural selection, but…

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Revise the passage Darwin is best known for his Theory of Inheritance of Acquired Characteristics, first presented in 1801 (Darwin's first book dealing with natural selection was published in 1859):Based on these observations and inferences, Darwin concluded that these traits, called adaptations were the product of evolution by Acquired Traits, these traits made the members of the population who had them equally fit for survival. an organism could also change during their lifetime in order to adapt to its environment, those changes are passed on to its offspring. For example, darwin believed that if giraffes stretched their necks to reach food, Their offspring and later generations would inherit the resulting long necks.

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Match the words. There are three phases of evolution expressed in the modern theory of evolution.  First, genetic variation is produced at three levels.  At the level of DNA,________  is a chemical change in the DNA molecule, which gives rise to variation.  At the level of the individual organism, __________  gives rise to variation during the formation of gamete cells.  At the level of the population, migration gives rise to variation.  Second, there is a reduction of genetic variation by two processes.  One process,_________  is the chance (or random) removal of genetic variants due to sampling error from generation to generation.  It is especially effective in small populations.  The other process, _________, eliminates the less fit variants (such as those less successful at avoiding predators or finding food).  meiosis reproductive isolation genetic drift natural selection gene mutation

ACTIVITY 2 Patterns of Descent with Modification from Common Ancestors 1.Dog (Canis familiarizes) is a common pet at home. Using this species, create a diagram to show patterns of descent with modification of dog from its common ancestor. Answers can be in a form of drawing or word. Refer to the example (The descent of modification or evolution of cat)

1. a) How does this experiment demonstrate the definition of evolution? b) Fitness of organisms is a function of the environment (that is, organisms best fit to the local environmental conditions leave more surviving offspring). How does this experiment demonstrate this fact?

Why does evolution matter now? List 5 facts of one of the events in the evolution timeline. Focus on what was discovered, how the evidence was found and when scientists learned about these facts.

Background: In class we did a project about m and m’s and there ability to evolve and natural selection. (Yes I know they can’t actually evolve it was just used as a example in class) however I can’t figure out this question. Occasionally a mutant may occur and produce a candy that is misshapen or Pointier or flatter than the rest. Often this proves to be a weakness, but a rare mutation may confer extra M&M durability. Other mutations in M&Ms could occur ( like ones that result in a new color). A mutant un you population represents a new _________. What goes in the blank

Hello, I need help answering number 32 (Including the sub-parts) multiple choice questions. Pls and thank you! 32. A.) A selective sweep happens when: a) a new mutation increases rapidly toward fixation b) selection acts on standing genetic variation c) no linkage disequilibrium results d) fitness trade-offs exist   B.) Fitness components include all the following except: a) frequency of new mutations b) probability of getting a mate c) survival to adulthood d) fecundity

Punctuated Equilibrium is a hypothesis that ... suggests that evolution is not gradual but occurs in uneven pulses, where the evolution of new species can happen rapidly. O None of these answers are true suggests evolution happens when there is a disturbance in "the force." O envisions evolution occurring through sudden changes in a gene pool. envisions evolution as a slow/gradual process.

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Remember that understanding is explanations more than facts. Definitions of phenotype, genotype, allele, gene, microevolution, macroevolution Know that in humans, most of the genetic variation is observed within populations, and know why that is. Know the 4 processes of evolution (3 neutral + natural selection) Know that evolution isn't progressive and doesn't necessarily lead to more complexity Know that evolution can lead to traits that decrease survival (ex: sexual selection) Know that quantitative traits are generally influenced by (i) many genes, each having a small effect on the trait value; and (ii) the environment What is F1 like when you cross 2 homozygotic lines of peas of different colors? What is F2 like when you cross F1 individuals (remember what 9:3:3:1 is about) Know what genetic dominance is about Definitions of chromosome, nucleus, mitosis, meiosis, crossing over How many chromosomes in humans? How many pairs of chromosomes? Know and apply Hardy-Weinberg's equation…

33 As 33 As Light skin pigmentation Arsenic-rich Cold Elevation Short Cholera resistance environment Marine Lactose Malaria diet tolerance resistance climate stature EVOLUTION 4e, Figure 6.28 © 2017 Sinauer Associates, Inc. b) Evolutionary biologists often say that evolution "selects for outcomes" not for the particular genetic changes that lead to that adaptive outcome. Given that perspective, is it surprising that different gene mutations might be involved in the evolution of the same trait (such as light skin or adaptation to living in high mountains)? Why or why not?

Select all that apply. Beetles from two geographically isolated populations are captured and brought to the lab. When an adult male from one population and an adult female from the other population are placed together, they mate, and the female lay eggs a couple of days later. The eggs hatch, the beetles develop into adults but are sterile. Which of the following are true? This is an example of post-zygotic reproductive isolation. O Sexual selection is likely responsible. O This is an example of pre-zygotic reproductive isolation. O Dobzhansky-Muller genetic incompatibility is likely responsible. Question 3 Choose all that apply. Which of the following are true of adaptive radiations? OAdaptive radiations involve relatively rapid speciation. The evolution of the Hawaiian silverswords is an example of an adaptive radiation. OAdaptive radiations can occur when an ancestral species colonizes a new arca and adapts to multiple open niches. Question 4 What are the three major steps of…

Genetic variation is evident. The variation in your community is simple evidence of understanding the basics of evolution. How does this imply the existence of evolution? Does this mean that some humans are more evolved than others?

House mouse (Mus musculus) Gene of interest: B4galnt2 (encodes glycosyltransferase enzyme) • Allele R: Associated with prolonged bleeding due to issues with blood clotting; associated with resistance to bacterial infections due to absence of intestinal expression. Allele C: Associated with increased susceptibility to bacterial infections; not associated with prolonged bleeding. A B C The population is closed; there are no new mice coming in. The cages are setup to allow for random mating. The B4galnt2 gene is not associated with any mating preferences or non-random mating patterns. Studies have shown that mutations in this locus are extremely rare. The population is EXTREMELY large. The population is kept in well maintained environment, free of bacterial infections. The mouse food is supplemented with a low dose of blood coagulator, which helps the blood clot and eliminates any prolonged bleeding. None of the genotypes display any side effects to this medication. The population is…