Which of the following statements about the stationary phase is correct? A.) The birth rate equals the emigration rate. B.) The death rate equals the immigration rate C.) The birth rate equals the death rate D.) The emigration rate equals the immigration rate 2.) Life strategies of various populations

Which of the following statements about the stationary phase is correct? A.) The birth rate equals the emigration rate. B.) The death rate equals the immigration rate C.) The birth rate equals the death rate D.) The emigration rate equals the immigration rate 2.) Life strategies of various populations

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter21: Microevolution: Genetic Changes Within Populations

Section: Chapter Questions

Problem 8TYK: If the genotype frequencies in a population are 0.60 AA, 0.20 Aa, and 0.20 aa, and if the...

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Need help with 1 and 2: 1.) While studying a population of finches, a researcher notices that the change in population size for the finches after one year is negative. To explain this, the researcher makes a few statements. Which of the following statements about the above population is correct ? A.) The natality rate would have been higher than the mortality rate B.) The rate of immigration would have been higher than the rate of emigration C.) The sum of births and immigration would have been greater than the sum of deaths and emigration . D.) The sum of deaths and emigration would have been greater than the sum of births and immigration 2.) A population of beetles is introduced into an environment where conditions are ideal allowing the beetle population to reach its biotic potential for many generations. This population of beetles shows? A.) logistic growth B.) linear growth C.) per capita growth D.) exponential growth
Please answer. 1. Do your results match your predictions for a population at Hardy-Weinberg equilibrium? What would you expect to happen to the frequencies if you continue this simulation for 25 generations? Is this population evolving? 2. Consider each of the conditions for the Hardy-Weinberg model. Does the model used to produce generations 1, 2, and 3 meet each of those conditions?
1. The diagram shows the population curve (y-axis) vs time (x-axis). Which line/curve best describes the theory of natural selection of Charles Darwin? 2. The diagram shows the population curve (y-axis) vs time (x-axis). Which curve represents the scenario described by Thomas Malthus "the populations with unlimited natural resources grow very rapidly, after which population growth decreases as resources become depleted". 3. The diagram shows the population curve (y-axis) vs time (x-axis). Which curve best represents the growth of bacteria? 4. The diagram shows the population curve (y-axis) vs time (x-axis). Which line/curve acts as a moderating force in the growth rate by slowing it when resources become limited and stopping growth once it has been reached.
The calculated chi-square value which is 0 is less than the critical value which is 5.991 (under the degree of freedom 2). What is the probability of the computed chi-square value? And is it part of the population in Hardy-Weinberg equilibrium?
Question:- How do you predict that an increase in emigration will change the shape of this population's age structure? Use the simulation to test your prediction before committing to one of the four options. a.The overall size of the curve will increase in the same proportion at every age. b.The overall size of the curve will decrease in the same proportion at every age. c.The size of the curve will increase at every age, but with the greatest change at the older ages. d.The size of the curve will primarily in the range of ages from 20 to 40.
1. Answer the following questionsa)How long will it take for a dolphin population to be reduced by 50% if the intrinsic rate of increase is -.04?b)In the last 70 years the blue whale population decreased from 340,280 to 4,727. What is the intrinsic rate of decrease (r)? c)If the current intrinsic rate of increase for blue whales is .1, how long will it take the current population of 4,727 to climb back to 340,280?
In this fictitious example of a cohort study, we found that in a factory of 3,000 workers, 1,000 workers were exposed to toxic substances, and 2,000 were not. During the study period, 800 of the exposed workers developed some type of lung disease, and only 40 of the non-exposed workers developed a lung disease. A. What is the incidence of lung disease among exposed workers? Use 1,000 as the multiplication factor and answer should be in whole numbers. B. What is the incidence of lung disease among non-exposed workers? Use 1,000 as the multiplication factor and answer should be in whole numbers.
Question:- Please describe advantages and disadvantages of Principle Components Analysis (PCA) method in controlling population stratification.
61. Which of the following violates the assumptions of the Hardy-Weinberg model? The population is infinitely large. Every individual survives and reproduces equally well. The population does not change in size because of an influx of migrants. Sexual selection exists within the population. There are no changes in the chromosomal structures of individuals in the population.
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