A species of insect has a gene that determines whether the legs have brown stripes or black stripes, with brown being completely dominant over black. There are 76 BB insects, 50 bb insects and 124 Bb insects. If there were 90 brown individuals and 15 black individuals in the parent population, what can be concluded about the population?* O The population is not evolving O The population is evolving O Stabilizing selection is occurring. O The population is in Hardy-Weinberg equilibrium.

A species of insect has a gene that determines whether the legs have brown stripes or black stripes, with brown being completely dominant over black. There are 76 BB insects, 50 bb insects and 124 Bb insects. If there were 90 brown individuals and 15 black individuals in the parent population, what can be concluded about the population?* O The population is not evolving O The population is evolving O Stabilizing selection is occurring. O The population is in Hardy-Weinberg equilibrium.

Biology: The Unity and Diversity of Life (MindTap Course List)

14th Edition

ISBN:9781305073951

Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Chapter17: Processes Of Evolution

Section: Chapter Questions

Problem 3SQ

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For questions 14-20, fill in the blanks using the word bank below. Fitness i Mejosis Mutations Evoludon Selected variation Competition allele frequency pressure 14. According to Darwin's theory of natural selection, every population has heritable their traits. mitosiss 15. These differences are caused by meiosis and 16. Predators, competition, changing environments will exert on individuals in a population. 17. Some traits will be beneficial and increase an organism's 18. Eventually favorable traits will be for, while hamful traits will not. 19. This will cause a shift in the of a population over time. 20. This shift in the genotypes and phenotypes of a population is known as low is a diagram demonstrating the effects of antibiotics on a population of bacteria over time. Draw a tch each box with its correct caption. 0. 000 24. 00 23. 22.
A group of 50 men and 50 women establish a colony ona remote island. After 50 generations of random mating,how frequent would a recessive trait be if it were at afrequency of 1/500 back on the mainland? The population remains the same size over the 50 generations, andthe trait has no effect on fitness.
The original source of new alleles, upon which selection operates,is mutation, a random event that occurs without regard to selectionalvalue in the organism. Although many model organismshave been used to study mutational events in populations, someinvestigators have developed abiotic molecular models. Soll et al.(2006. Genetics 175:267–275) examined one such model to studythe relationship between both deleterious and advantageousmutations and population size in a ligase molecule composed ofRNA (a ribozyme). Soll found that the smaller the population ofmolecules, the more likely it was that not only deleterious mutationsbut also advantageous mutations would disappear. Whywould population size influence the survival of both types ofmutations (deleterious and advantageous) in populations?
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Amount of NH3 nces ne In a population of pansies, the red allele (CR) is incompletely dominant to the white allele (Cw). If the frequency of the red allele is 80%, what is the frequency of pink flowers in the population?* ds 1 and 2 20% Highschool MP3, 0.20 0.80 0.32 Fri O 0.16 When Charles Darwin visited the Galapagos Islands, he observed the marine OOO
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ajor G Population Evolution FIB with Using the two Hardy-Weinberg equations, calculate the allelic and genotypic frequencies. Using the information provided in the chart below and the Hardy - Weinberg equations, calculate the genotypic frequencies for this population. = the frequency of the dominant allele the frequency of the recessive allele p = the frequency of the homozygous dominant genotype 2pq = the frequency of the heterozygous genotype q 2 = the frequency of the homozygous recessive allele 1 = the total population b. 2 %3D %3D %3D Genotype Number Genotypic frequency AA 490 49% Aa 420 42% 90 aa TOTAL 1000 100% p+ q = 1 [allelic frequency] p2 + 2pq + q 2 = 1 [genotypic frequencies] q= 0.3 1. Given the aa genotypic frequency, what is q [allelic frequency]? q2 = 0.09 %3D what is the allelic frequency for p? p = 0.7 2. Given q = 0.3 3. What is the AA frequency? 0.49 4. What is the Aa frequency?
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