You are studying two populations of rats—one in New York and the other in Florida. Adult New York rats seem to prefer Swiss cheese, whereas Florida rats seem to prefer cheddar. Design an experiment to determine the extent to which this behavior may be genetically controlled versus environmentally influenced.
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You are studying two populations of rats—one in New York and the
other in Florida. Adult New York rats seem to prefer Swiss cheese,
whereas Florida rats seem to prefer cheddar. Design an experiment
to determine the extent to which this behavior may be genetically
controlled versus environmentally influenced.
Step by step
Solved in 3 steps
- You observe some bark beetles with different feeding behaviors. You find that the behavioral phenotypes you observed are closely associated with the following genotypes. genotype phenotype number observed BB feeds under bark 60 Bb feeds on top of bark 24 bb feeds on leaves 16 a) What are the allele frequencies and the expected number (out of 100 beetles) of genotypes? b) Calculate the Chi-Squared value (c2). Then look up the p-value using this Chi-squared calculator: https://www.mathsisfun.com/data//chi-square-calculator.html Enter “1” for Degrees of Freedom. (There are 3 genotype categories, but only 1 DF because they are not fully independent—calculated from just 2 allele frequencies). The p-value is the probability that you would see the deviance you observed by chance, assuming the null hypothesis is true). Report both values. Is the population in H-W equilibrium? c) If you answered “No” to b): Provide at least three biologically…You observe some bark beetles with different feeding behaviors. You find that the behavioral phenotypes you observed are closely associated with the following genotypes. genotype phenotype number observed BB feeds under bark 60 Bb feeds on top of bark 24 bb feeds on leaves 16 a) What are the allele frequencies and the expected number (out of 100 beetles) of genotypes? b) Calculate the Chi-Squared value (c2). Then look up the p-value only using this Chi-squared calculator: https://www.mathsisfun.com/data//chi-square-calculator.html Clear all the values in the box at upper right, enter the Chi Square value that you obtain FROM YOUR CALCULATIONS in the Chi-Square box, and enter 1 for the degrees of freedom. Is the population in H-W equilibrium? c) If you answered “No” to b): Provide at least three biologically valid reasons why the observed beetle population may not be in equilibrium. If you answered “Yes” to b): Why do you think this…A biologist set up an experiment to study 3 lizards. On the first day of his study, he measured the mass of the three spice mens. He made sure that all lizards weigh 100 grams. Then the lizards were put into individual cages with the following conditions. 1. What is the independent variable? 2. What is the dependent variable? 3. Which among the set ups is the control set up? 4. Which of the item is/are the experimental set ups? 5. Based on the result of the experiment, what conclusions can be drawn from this?
- You are studying the heritability of maze running ability in rats. You test parents and their offspring in the maze and give them a score. ponitel Odepositphotos You produce the following graph: A 4 2 slope = = 0.9 8 -10 - 12 -10 -8 -9- -4 -2 0 2 4 6 8 midparent maze score offspring maze scoreHow does the concept of artificial selection is applied in the creation and domestication of chihuahuas out of wolves? Explain in an explicit way.150 patients with Crohn’s disease are given an experimental treatment in which they all drink “cocktails” containing thousands of pinworm eggs. Within one week, 72% of the patients report a reduction in their abdominal pain. Fill in the following table. Is there a control treatment (and, if so, what is it)? Is there any accounting for individual variation? Is there repetition in the experiment? What, if any, confounding variables are not addressed in the experiment? Can we say with some confidence that ingesting pinworm eggs is an effective treatment for the symptoms of Crohn’s disease?
- Students in a genetics laboratory began an experiment in an attempt to increase heat tolerance in two strains of Drosophila melanogaster. One strain was trapped from the wild six weeks before the experiment was to begin; the other was obtained from a Drosophila repository at a university laboratory. In which strain would you expect to see the most rapid and extensive response to heat-tolerance selection, and why?Which form of conditioning is used most for behavior modification? Why does this form work better? Why would Classical Conditioning help someone in their daily life functioning? Which form of conditioning would you most likely see in a classroom setting? Create your own examples of each form of conditioning. Be sure to include the following information in your answer. In addressing classical conditioning: Identify UCS, UCR, NS, CS, and CR. Discuss any stimulus generalization that you observed. Discuss any extinction and spontaneous that occurred. In addressing operant conditioning: Identify negative and positive reinforcements and punishments. Label the schedule of reinforcement or punishment.Imagine that you’re studying a species of bird. Let’s say the House Sparrow. You are interested in whether the species exhibits personality and whether there is selection on personality traits. Design an observational and experimental study to determine whether House Sparrows have a personality and, separately, design a study that would test the idea that there is currently selection on this trait(s)
- People on a medicine for arthritis report they are getting fewer headaches. You decide to see if this arthritis medicine really also helps cure headaches. Your experiment will include 30 people who report they get headaches every single day. 10 people were placed into each group and the medication was given to each group as indicated below. At the end of the day, people in each of the groups were asked if they had a headache that day. Identify the: a. Independent variable b. Dependent variable c. Standardized variableProvide an example of a research project in your hometown where you would choose to use a t-test for independent samples. Would you use a one-tail or two-tail test, and why? What is your null hypothesis and research hypothesis? If you have a sample size of 500, should you interpret the statistical significance or the effect size?Cerebellar abiotrophy (CA) is a recessive, genetic neurological disease found in the Arabian horse breed. If the incidence of this disease is about 1 in 400 Arabian horses, estimate the frequency of carriers in a population in Hardy-Weinberg equilibrium. Value of q²: 0.0025 Value of q: 0.05 Value of p: 0.95 Carrier Frequency: 0.095 How many horses would you expect to be carriers for cerebellar abiotrophy if the population consists of 582 Arabian horses? (Round to the nearest whole number and enter 2 digits.)