Concept explainers
To determine: The approximate mean number of errors that changed from prenatal population to the seventh generation of fast rat population. Also, determine the type of selection in this form of heredity.
Introduction: The rats were intentionally mated through the selective breeding to demonstrate the particular
Explanation of Solution
The behavioural variation in the rats was determined by an experiment throughout several generations. The rats that have a genetically diverse group to find the maze by making few errors were labeled with bright, and those who were error-prone were labelled dull. The mating was performed between bright-bright, and dull-dull rats upto the seven generations. The scientist concluded that both types of rats remained genetically separate. The dependent variables concluded the mean number of errors that were made in rats in several trials. The further mating of the dull mother with bright offspring concluded that bright rats were making lesser errors than the dull rats.
The experiment was performed through the artificial selection of the rats that demonstrated the flexibility in the learning ability of rats in response to the environmental factors.
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Chapter 53 Solutions
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- A population of 1000 beetles has 600 individuals that have genotype QQ, 100 individuals that have genotype Qq, and 300 individuals that have genotype qq. a) Calculate f(Q) and f(q) for this population. Show your work and don’t assume HWE. b) Calculate f(QQ), f(Qq), and f(qq) for this population. Show your work and don’t assume HWE. c) Calculate the expected genotype frequencies if the population is in Hardy-Weinberg equilibrium. Show your work. d) Does this population appear to be at Hardy-Weinberg equilibrium? Why or why not? (Although answering this question rigorously would require a statistical test, you don’t need to do that here.).arrow_forwardDescribe the similarities and differences between the stabilizing, directional, and disruptive selection models.arrow_forwardUnder what scenaries is genetic drift most potent as an evolutionary process? how do factors like population size and initial allele frequences affect likelihood of an allele being lost from a population (or becoming fixed)?arrow_forward
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