Changes in environmental conditions can render previous adaptations as maladaptations. Describe an example of maladaptation in humans during the last 100,000 years. Your answer should include a discussion of the relevant environmental factors, fitness (in both environments), and specific variants (genotypes). Please explain and other useful info.
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Question:-
Changes in environmental conditions can render previous adaptations as maladaptations. Describe an example of maladaptation in humans during the last 100,000 years. Your answer should include a discussion of the relevant environmental factors, fitness (in both environments), and specific variants (genotypes).
Please explain and other useful info.
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- Changes in environmental conditions can render previous adaptations as maladaptations. Describe an example of maladaptation in humans during the last 100,000 years. Your answer should include a discussion of the relevant environmental factors, fitness (in both environments), and specific variants (genotypes).Introgression from Neandertal and Denisovan relatives in our past has resulted in many humans around the world having alleles derived from these extinct ancestors. Describe one allele attributed to Neandertals and one allele attributed to Denisovans in humans today. For your descriptions, include the role of the gene(s) that the allele is(are) linked to, what benefit or feature they are proposed to contribute to, and the population(s) that carry the allele. A Denisovan or Neandertal haplotype would also be suitable.Figure is attached Please consider sexual selection operating on red-collared widowbirds assess the lowercase-Roman-numeral-labelled statements that appear immediately below; and click the uppercase-letter-labelled response that is presented below and conveys the most accurate information. i. The specimen depicted at the top in the figure represents the group in which individuals were manipulated experimentally, trimmed so that tail lengths were shortened substantially.ii. The specimen depicted at the bottom in the figure represents the group in which individuals were unmanipulated, left untrimmed.iii. Individuals in the group represented by the specimen at the bottom fared better in condition (measured as body mass relative to length) terms than did individuals in the group represented by the specimen at the top. iv. Individuals in the group represented by the specimen at the bottom spent more time flying and displaying to potential mates than did individuals in the group represented…
- 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.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…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
- Question:- Select all of the statements about correlated trait evolution that are accurate. Group of answer choices a. genetic correlations may be beneficial, harmful, or neutral b. our in-class example of a correlation between different beak size and shape traits in Darwin’s finch was in example of genetic correlation (this was given in lecture so i know this is an answer) c. genetic correlation necessarily involves pleiotropy d. correlated selection necessarily involves pleiotropy e. antagonistic pleiotropy may occur with correlated selection f. our in-class example of a correlation between garter snake scalation patterns and escape behavior was in example of genetic correlationDirections: Perform the task below based on your understanding on the topic " Mechanisms 'of Evolutionary Change" . There are four factors that can change the allele frequencies of a population namely Natural Selection, Mutations, Genetic Drift and Gene Flow. Make a creative outline summarizing the processes happened in these mechanisms of evolutionary change (use separate sheet ifHow do mechanisms of speciation, such as genetic isolation, reproductive barriers, and ecological factors, apply to the human-chimp-gorilla trichotomy? Discuss the role of these mechanisms in driving speciation and shaping the evolutionary relationships among humans, chimps, and gorillas, based on genetic evidence such as comparative genomics and molecular phylogenetics.
- INSTRUCTION: - Answer the Question Properly - Do not copy in Google or here in Bartleby QUESTION: Human immunodeficiency virus entered human populations after evolving from a simian immunodeficiency virus. Nikolaas Tinbergen (1963) 1 proposed explaining shifts in traits from two perspectives: dynamic versus static, and proximate versus ultimate. This framework can be used to understand the evolution of a trait in four ways: (i) causation (proximate/static): the mechanism of the trait as it works in the present; (ii) survival value (ultimate/static): how function of the trait enhances survival or reproduction; (iii) ontogeny (proximate/dynamic): the development of the trait in an individual; and (iv) evolution (ultimate/dynamic): the phylogenetic history of the trait. Use these categories to discuss the causes for the virus shifting to humans from other primates.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…Describe how changes in the ladybugs'environment may influence their survival and/or reproduction. Make sure to use the vocabulary terms adaptation, natural selection, and polymorphic.