The hsr-omega gene is induced by heat stress and is part of the conserved heat shock response system of Drosophila melanogaster Previous studies found two alleles, har-omeg and hsr-omeg, in the population. A more extensive survey of several D. melanogaster populations along Australian eastern seaboard yielded a result shown below. Which of the following statements is correct? Frequency of hsr-omegaª 1.00 0.80- 0.60 0.40 0.20 0.00 15 20 25 35 Latitude (°S) 45 O There are more hsr-omega allele in northern Australia. This pattern suggests that that the hsr-omegaa allele is adapted to an environment with higher temperatures. O If you transport 100 individuals from 20 "S and 100 from 30 "S to a location at 40 °S, fewer individuals from the 20 "S would survive in the new location when compared to

The hsr-omega gene is induced by heat stress and is part of the conserved heat shock response system of Drosophila melanogaster Previous studies found two alleles, har-omeg and hsr-omeg, in the population. A more extensive survey of several D. melanogaster populations along Australian eastern seaboard yielded a result shown below. Which of the following statements is correct? Frequency of hsr-omegaª 1.00 0.80- 0.60 0.40 0.20 0.00 15 20 25 35 Latitude (°S) 45 O There are more hsr-omega allele in northern Australia. This pattern suggests that that the hsr-omegaa allele is adapted to an environment with higher temperatures. O If you transport 100 individuals from 20 "S and 100 from 30 "S to a location at 40 °S, fewer individuals from the 20 "S would survive in the new location when compared to

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

Chapter22: Speciation

Section: Chapter Questions

Problem 1ITD: David Hills of Baylor University noted that three closely related species of leopard frog (genus...

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A different locus codes for drought tolerance in desert tortoises. On average during a drought, genotype AA produces 7 offspring, genotype AB produces 8 offspring, and genotype BB produces 3 offspring. The genotype frequencies in 2019 are 10% AA, 10% AB, and 80% BB. What is the expected equilibrium allele frequency p* after a large number of generations go by during the drought? Assume the tortoise population is also very large.
Drosophila buzzatii is a fruit fly that feeds on the rotting fruits of cacti in Australia. Timothy Prout and Stuart Barker calculated the heritabilities of body size, as measured by thorax length, for a natural population of D. buzzatii raised in the wild and for a population of D. buzzatii collected in the wild but raised in the laboratory (T. Prout and J. S. F. Barker. 1989. Genetics 123:803–813). They found the following heritabilities: Population Heritability of body size (± standard error) Wild population 0.0595 ± 0.0123 Laboratory-reared population 0.3770 ± 0.0203 Why do you think that the heritability measured in the laboratory-reared population is higher than that measured in the natural population raised in the wild?
The ability to roll your tongue is a dominant genetic trait passed on from generation to generation. Tongue rolling is the ability to roll the lateral edges of your tongue upward into a tube. The frequency of the tongue rolling trait was collected from 1,000 individuals each year 1925 to 2000 and is show in the data table below. Year Tongue Rolling Inability to Roll Tongue 1925 67% 33% 1950 68% 32% 1975 63% 37% 2000 67% 33% (a) Determine if the human population was in equilibrium from 1925 to 2000. Justify your response. (b) (b) Discuss how the Hardy Weinberg Principle can be used to determine whether this population is evolving (c) (c) Identify and describe THREE factors that would affect whether the population of Tongue Rollers is in Hardy Weinberg equilibrium. (d) (d) A scientist recently stated a claim that it is unlikely that the inability to roll your tongue will disappear from the population. Provide reasoning to explain…
In a certain population of finches, a single gene controls beak length. There are two possible alleles: S, which leads to a short beak, and L, which leads to a long beak. Individuals with the genotype SS will have a short beak, individuals with the genotype LL will have a long beak, and individuals with the genotype SL will have a medium-length beak. Scientists measure that in this population of 1,128 total birds, 321 birds have short beaks, 562 have medium-length beaks, and 245 have long beaks. Ten years later, the measurements are repeated. This time, there were 1,346 birds in the population. 452 have short beaks, 699 have medium-length beaks, and 195 have long beaks. Based on the data collected 10 years later, is this population of finches currently evolving? How do you know? A. yes because more individuals in the population exhibit the SS genotype than would be expected if the population was in Hardy-Weinberg equilibrium B. no because the number of individuals that…
I. A population called the founder generation, consisting of 2000 AA individuals, 2000 Aa individuals, and 6000 aa individuals is established on a remote island. Mating within this population occurs at random, the three genotypes are selectively neutral, and mutations occur at a negligible rate. *help needed for sub questions d-f. a. What are the frequencies of alleles A and a in thefounder generation?b. Is the founder generation at Hardy-Weinbergequilibrium?c. What is the frequency of the A allele in the secondgeneration (that is, the generation subsequent to thefounder generation)?d. What are the frequencies for the AA, Aa, and aagenotypes in the second generation?e. Is the second generation at Hardy-Weinbergequilibrium?f. What are the frequencies for the AA, Aa, and aagenotypes in the third generation?
The vgll3 locus is responsible for the age at which salmon mature. The vgll3 L allele causes salmon to mature earlier. This is the data on the frequency of the vgll3 L allele collected from Alaskan salmon over the course of 30 years. Which of the following describes whether this population is at Hardy-Weinberg equilibrium, and why? A - This population is not at Hardy-Weinberg equilibrium because there is evidence of selection against earlier maturing salmon. B - This population is at Hardy-Weinberg equilibrium because there is no overall trend in allele frequency over the study period. C - This population is not at Hardy-Weinberg equilibrium because there is evidence of the introduction of new mutations causing salmon to mature earlier. D - This population is at Hardy-Weinberg equilibrium because including salmon from six rivers ensures a large and genetically stable population.
A Senecio lautus population growing on a headland has a prostate form, growing low to the ground, while a nearby population on coastal dunes grows in a more upright shape. To test whether this trait has diverged as a result of each population adapting to its local environment, we could 1. plant both populations in a common garden and test whether the populations still expressed the different growth forms 2. plant both populations in both the dune and headland habitat, and test whether the populations are fitter in their home environments 3. plant both populations in both the dune and headland habitat and test whether the populations still expressed the different growth forms. choose one option
Seven sauropod dinosaurs of the same species (Apatosaurus ajax) from the same population in Montana have neck lengths of 7.3, 8.0, 7.7, 7.8, 8.3, 8.4, 7.9, and 8.0 meters. A different population of the same species from Utah has neck lengths of 8.0, 8.3, 8.3, 8.8, 8.1, 9.0, and 9.3 meters. a) Calculate the mean, median and mode for each population. b) If wanted to compare data from the two populations, what type of graph would you choose and why?
A sample of 600 individuals from a population is examined for the presence of the HindIII polymorphism in an autsomal Sca gene. There are two alleles of Sca gene, A and a. The results are 14 individuals are AA, 212 are Aa, 374 are aa. Please answer the following questions accordingly? How many alleles are present in the gene pool in the sample population fort he Sca gene? What are the genotype frequencies? What are the frequencies of A and a alleles? What are the expected numbers of the three genotypes, assuming random matings.
In a population of mice, there are two alleles of the Alocus (A1 and A2). Tests showed that, in this population,there are 384 mice of genotype A1/A1, 210 of A1/A2 , and260 of A2/A2. What are the frequencies of the two allelesin the population?
There are two isolated populations (A and B) of an endangered plant species. Population A has had a constant size of 2,000 plants, and population B has had a constant size of 250 plants. We most expect to see more changes in the frequency of neutral alleles in population _______ due to _______.
In a large, randomly mating population with no appreciable forces working to change gene frequencies, the frequency of homozygous recessive individuals for the characteristic of extra-long eyelashes is 60 per 1000. What percent of this population carries this very desirable trait but displays the dominant phenotype of short eyelashes?