For these experiment assume allele A = red, allele a = white . There are three flower colors (phenotypes and genotypes) for this species where AA=red, Aa = pink, aa = white. • A population of Four O-Clocks is in Hardy-Weinberg equilibrium and no evolutionary forces are acting on the population. Bees are introduced into the population. Individual bees only visit a single color of flower so that red flowers only mate with red flowers, pink with pink, and white with white. The simulator we have been using doesn't have "positive assortative mating" as an option, but if it did (in addition to the other parameters) which parameters should be changed to model this problem? Select all that need to be changed. O Selection O Migration O Mutation O Finite Population (i.e. population size) O Assortative Mating

For these experiment assume allele A = red, allele a = white . There are three flower colors (phenotypes and genotypes) for this species where AA=red, Aa = pink, aa = white. • A population of Four O-Clocks is in Hardy-Weinberg equilibrium and no evolutionary forces are acting on the population. Bees are introduced into the population. Individual bees only visit a single color of flower so that red flowers only mate with red flowers, pink with pink, and white with white. The simulator we have been using doesn't have "positive assortative mating" as an option, but if it did (in addition to the other parameters) which parameters should be changed to model this problem? Select all that need to be changed. O Selection O Migration O Mutation O Finite Population (i.e. population size) O Assortative Mating

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter53: Introduction To Ecology: Population Ecology

Section: Chapter Questions

Problem 15TYU

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Similar questions

A population of birds has two alleles encoding for three different phenotypes: long wings, wingsss, and mid-length wings. . The initial frequency of the Sallele was 0.63 and the sallele was 0.37. However 97% of the long-winged birds survived to reproductive age56% of mid-length birds survived to reproductive age, and only 10% of short-winged birds survived to reproductive age. You are going to determine if natural selection has an effect on the allele frequency What is the expected frequency of the Sallele in the next generation when you incorporate the survival rate? Please use as many decimals points as possible when doing your calculations. Please answer using four decimal points. (Your population can be 100 or 1000 individuals or any numberreally up to you.I work with 1000but that won't change the results because we are talking about frequency.)
Imagine you were trying to test whether a population of flowers is undergoing evolution. In a field, you can't 600 blue flowers and 200 red flowers, and you know from previous research that blue flower color is dominant to red flower color. What would you expect the allele frequency's of this flower population to be?
A population with allele frequencies p=0.6 and q=0.4 is subjected to selection against the dominant allele. If selection is completely effective (W11=0, W12=0, W22=1), what will be the frequency of the dominant allele in the next generation?
Snapdragon plants exhibit incomplete dominance in flower colour and this is controlled by a single locus. It is possible to have red flowers (RR), pink flowers (Rr) or white flowers (rr). Five years ago, a researcher randomly collected data on 1500 snapdragon plants. They found 60 red, 480 pink, and 960 white. You now collect data on these plants from the same area and find: 540 red, 720 pink, and 240 white. Has there been evolution in this population? If yes, is natural selection involved? Explain and justify your answers.
In garden pea plants, tall stem length (T) is dominant over short stem length (t). In an ideal garden pea plant population exhibiting Hardy–Weinberg equilibrium, if allele T has a frequency of 0.55, what percentage of the population is recessive for this trait? Show all work. Round your answer to the nearest whole number: %
Considering the Hardy-Weinberg theorem’s assumptions, which of the following statements is NOT correct? (Recall that there are certain assumptions that must be true in order for the Hardy-Weinberg theorem to accurately predict genotype ratios in the next generation.)a) The population must be very large so there random genetic drift will not occur.b) No natural selection can occur.c) Mating must be random.d) Individuals must migrate into and out of the population so that gene flow will occur.e) Mutations must not occur.
Imagine you are studying a population of finches on one of the Galápagos Islands. You have been recording many of the birds’ physical traits, including the length of both wings. You observe that for 80% of individuals measured, the length of the left wing is not significantly different from the length of the right wing (in other words, they are symmetrical). But for about 20% of birds measured, the wing lengths are asymmetrical. This distribution is true from generation to generation. Suddenly, a rare 5-day windstorm takes over the island. After the storm, you spend the next several days netting each bird on the island that survived the storm. You discover that 85% of the birds with symmetrical wings survived the storm, whereas only 5% of the birds with asymmetrical wings did. a. Propose a hypothesis to explain this observation. b. If such storms become increasingly common due to changes in climate, how might you expect the population to change over time with respect to wing symmetry?
The allele frequencies of the parents in our simulation were p = 0.75 and q = 0.25. The heterozygote has a selective advantage and therefore a fitness of W12 = 1. Assume the homozygotes have a fitness of W11 = 0.4 and W22 = 0.1, respectively. Calculate the allele frequencies after two rounds of selection and show your work.
The relative fitnesses of A1A1, A1A2, and A2A2 are 0.5,0.8 and 1 respectively. What is the expected result of natural selection in this selection? a.) A1 will increase and A2 will decrease. b.) A2 will increase and A1 will decrease. c. Both alleles will decrease in frequency d.) A stable equilibrium will be achieved in which both alleles are maintained e.) An unstable equilibrium will exist and the outcome depends on the allele frequencies.
Suppose that, in one generation, the frequency of the A allele is 40 percent (p=0.40) and the frequency of a allele is 60 percent (q=0.60). If this population is in genetic equilibrium, (1) chances of an individual in the next generation having genotype AA would be ___?(2) The probabilities of genotype aa would be ___? (3) The probability of genotype Aa would be ___? Direction: Provide an answer in 1, 2 and 3 question.
You have sampled a population in which you know the percentage of the homozygous dominant genotype (AA) is 52%. Using that information calculate the following: -The frequency of the “aa” genotype -The frequency of the “a” allele -The frequency of the “A” allele -The frequency of “Aa” genotype -The frequencies of the two possible phenotypes if “A” is completely dominant over “a” ***Round your numbers to the hundredth decimal point*** ***Make sure to enter your answers using numbers (use percentage #s for genotypes & phenotypes and use decimal #s for frequency of alleles)***
Present the name of the population undergoing natural selection and its selection pressure (e.g., what is causing the change in the population's alleles); the nature of the change and its implications of that change for the population.