directional selection? Question 70 options: During a drought, individual leopard frogs of intermediate body size are less likely to survive than large and small individuals. During a drought, individual house finches with intermediate beak size are more likely to survive than individuals with large or small beaks. During a drought, individual cattails that are heterozygous at a particular locus are more likely to die than homozygous individuals. During a drought, the larger individuals in a population of lizards are less likely to survive than the smaller ones.

directional selection? Question 70 options: During a drought, individual leopard frogs of intermediate body size are less likely to survive than large and small individuals. During a drought, individual house finches with intermediate beak size are more likely to survive than individuals with large or small beaks. During a drought, individual cattails that are heterozygous at a particular locus are more likely to die than homozygous individuals. During a drought, the larger individuals in a population of lizards are less likely to survive than the smaller ones.

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter19: Population Genetics And Human Evolution

Section: Chapter Questions

Problem 8QP: How Can We Measure Allele Frequencies in Populations? In a population where the females have the...

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You are asked to assess whether a population of endangered salamanders can adapt to warming climate in their preferred habitat. The salamanders vary at a locus that determines adaptation to temperature, and the warming climate creates selection favoring one of two alleles at that locus. Drawing on what you know about natural selection and genetic drift, what information would you need to know about the salamanders to determine whether the allele that improves their adaptation to warmer climates will become fixed in the population? Strictly no plagiarism.
In the garden shed belonging to one of this text’s authors, stabilizing selection has occurred over the past 10 years in the house mouse, Mus musculus. Which of the following scenarios is an example of stabilizing selection? (a) Small and medium-sized mice cannot reach the seed shelf in the shed and therefore are at a disadvantage for ﬁnding food, so they do not survive and reproduce as well as large mice do.(b) Small mice cannot reach the seed shelf, and large mice are easily seen by hawks circling above. Medium-sized mice therefore survive and reproduce better than both small and large mice. (c) Small mice can easily cross the yard to the vegetable garden, and large mice can easily reach the seed shelf. Medium-sized mice have trouble with the seed shelf and are seen by hawks in the yard. Small and large mice survive and reproduce much better than medium-sized mice. (d) All of these are examples of stabilizing selection. (e) None of these are examples of stabilizing selection.
Which type of selection is represented in a population of birds where a wing span of 2ft rather than 1ft or 3ft is more beneficial? Directional Disruptive Stabalizing
Which type of selection is represented from a population of mice living in the forest where only dark colored fur survive? Disruptive Directional Stabalizing
In a species of lily, the color of the flower’s petals is determined by a dominant purple allele (F) or recessive white allele (f). One hundred flowers in Hardy-Weinberg equilibrium were sampled, and only 15% of the population showed the phenotype of white. Which of the following numbers represents the calculated value of the recessive white allele frequency? A - 0.92 B - 0.39 C - 0.15 D - 0.85
Consider a hypothetical beetle whose back abdomen pattern is determined by two alleles A1 and A2. Beetles that are homozygous for the 'A1' allele have solid coloring, beetles that are heterozygous (A1A2) are spotted, and beetles that are homozygous for the A2 allele are striped. You find a population of 100 of these beetles and count each phenotype (shown below). TRUE or FALSE: this population is in Hardy-Weinberg equilibrium? What is the predicted frequency of spotted beetle? Solid Beetles = 49 Spotted Beetles = 35 Striped Beetles = 16 asap please
A population of beetles was scored for color. The frequencies of the genotypes and their relative fitness values are given below. Genotype BB Bb bb Phenotype Black Brown White Frequency 0.16 0.48 0.36 Fitness 0.72 0.82 1 What is the average fitness for color in this population of beetles? What is the frequency of black beetles after selection? What is the frequency of brown beetles after selection? What is the frequency of white beetles after selection?
Which of the following statements about genetic fitness and/or selection is false? Group of answer choices Individuals with low fitness have greater selection coefficients Fitness involves both relative viability and reproductive success Individuals with high fitness have greater selection coefficients Selection against recessive alleles tends to be slower overall than dominant alleles because of the survival in heterozygotes
If 80% of a population has a heterozy gous phenotype, and 16% of that population shows a recessive phenotype, is that population in Hardy - Weinberg equilibrium? In other words, does the population obey the rules of H - W? Perform a statistical analysis to determine your final answer.
Assuming a Hardy-Weinberg equilibrium, 21% of a population is homozygous dominant, 50% is heterozygous, and 29% is homozygous recessive. What percentage of the next generation is predicted to be homozygous recessive? Group of answer choices 53% 29% 42% 58%
If gene A/a is not in Hardy-Weinberg equilibrium due to natural selection such that individuals with the genotype AA have a fitness value of 1.0, heterozygotes have only slightly reduced fitness at 0.9, and individuals with the genotype aa have a fitness value of 0.6, what kind of change in allele frequency would you expect to see over time assuming you start with equal frequencies of the 2 alleles?
Which of the following is most likely to cause changes in wing color allele frequencies in Dumbledore beetles over a 10 year period? These beetles live on islands, are weak fliers, have small populations, and fitness does not vary with wing color.

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	During a drought, individual leopard frogs of intermediate body size are less likely to survive than large and small individuals.
	During a drought, individual house finches with intermediate beak size are more likely to survive than individuals with large or small beaks.
	During a drought, individual cattails that are heterozygous at a particular locus are more likely to die than homozygous individuals.
	During a drought, the larger individuals in a population of lizards are less likely to survive than the smaller ones.