In otters, hair color is controlled by codominant alleles of one gene.  One allele codes for grey hair, another allele codes for brown hair.  In one population you count 18 brown haired otters, 24 grey haired otters, and 48 heterozygous otters that have brown hair with grey patches. Test whether this gene is in Hardy-Weinberg Equilibrium in this population by doing a chi-square test.  Report your answers below.   Observed frequency of grey hair allele:  Observed frequency of brown hair allele:  For the remaining steps, use the rounded allele frequencies you calculated, but do not round intermediate steps.  Round only the reported values to the nearest 0.01. Expected number of all grey otters:  Expected number of all brown otters:  Expected number of brown otters with grey patches:  Calculate your chi-square value but do not report it. Use it to answer the following: Degrees of freedom? Type an integer:  The calculated chi square value is  the critical value.  Type “greater than” or “less than”. Reject null hypothesis? Type yes or no

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
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In otters, hair color is controlled by codominant alleles of one gene.  One allele codes for grey hair, another allele codes for brown hair.  In one population you count 18 brown haired otters, 24 grey haired otters, and 48 heterozygous otters that have brown hair with grey patches.

Test whether this gene is in Hardy-Weinberg Equilibrium in this population by doing a chi-square test.  Report your answers below.  

  • Observed frequency of grey hair allele: 
  • Observed frequency of brown hair allele: 

For the remaining steps, use the rounded allele frequencies you calculated, but do not round intermediate steps.  Round only the reported values to the nearest 0.01.

  • Expected number of all grey otters: 
  • Expected number of all brown otters: 
  • Expected number of brown otters with grey patches: 

Calculate your chi-square value but do not report it. Use it to answer the following:

  • Degrees of freedom? Type an integer: 
  • The calculated chi square value is  the critical value.  Type “greater than” or “less than”.
  • Reject null hypothesis? Type yes or no:
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