3. A population of beetles contains both light and dark beetles. The dark phenotype is dominant (DD or Dd), while the light phenotype is recessive (dd). To determine if the beetles were evolving, scientists studied the number of dark and light beetles present in the population in 2015 and in 2020. In 2015, the scientists found 337 light colored beetles and 663 dark colored beetles. In 2020, the scientists found 452 light colored beetles and 900 dark colored beetles. a. What is the frequency of light and dark phenotypes in 2015 and 2020? b. What is the frequency of alleles (D and d) in 2015 and 2020? Hint: The equation for Hardy-Weinberg equilibrium is 1-P² +2PQ+Q². The phenotype frequency of light colored beetles is equivalent to Q² and the frequency of recessive alleles is equal to the square root of Q². c. Is the beetle population evolving? How do you know?
3. A population of beetles contains both light and dark beetles. The dark phenotype is dominant (DD or Dd), while the light phenotype is recessive (dd). To determine if the beetles were evolving, scientists studied the number of dark and light beetles present in the population in 2015 and in 2020. In 2015, the scientists found 337 light colored beetles and 663 dark colored beetles. In 2020, the scientists found 452 light colored beetles and 900 dark colored beetles. a. What is the frequency of light and dark phenotypes in 2015 and 2020? b. What is the frequency of alleles (D and d) in 2015 and 2020? Hint: The equation for Hardy-Weinberg equilibrium is 1-P² +2PQ+Q². The phenotype frequency of light colored beetles is equivalent to Q² and the frequency of recessive alleles is equal to the square root of Q². c. Is the beetle population evolving? How do you know?
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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