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Lecture 1

GRST 209 Lecture Notes - Lecture 1: Corn Chip, Due Date, Genotype Frequency


Department
Greek and Roman Studies
Course Code
GRST 209
Professor
Bryan Natali
Lecture
1

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Biology 243 Winter 2016 Hardy-Weinberg Assignment
Total Marks 15 (1% of Course Grade)
Print Full Name Legibly: _____________________________________________________________
Due Date: The beginning of your scheduled lab the week of March 14, 2016
Your submission must be your own original work in your own words. Assignments that are identical or very
similar are not acceptable and will receive a grade of zero. All suspected cases of plagiarism are also reported to
the Head of the Department. See the University Calendar and page vii of the lab manual for more information on
academic misconduct.
Print a legible response on this piece of paper; you may use both sides of the paper for your response but
cannot attach another sheet; illegible or unclear answers will not be marked
You start work at Bonsanto, a new agricultural biotechnology corporation, and they want you to engineer a
strain of corn that can grow during the winter. Just thinking of all the corn chips that could be produced with a
year-round growing season makes you see dollar signs ($$). The first step is to find a population of corn that is
in genetic equilibrium so that you can more easily select for the ability to grow in cold environments. Looking
through the companys corn population stocks, you think you find one that will be perfect for your research.
You select six (6) cobs of corn from the population and determine the genotype of each kernel on each cob.
Based on the data below for a trait with a single gene locus and two alleles, will you be able to use this
population for your research (i.e. is this corn population in genetic equilibrium)?
In your answer, determine the observed genotype and allele frequencies, the expected genotype frequencies, and
whether or not the population is in genetic equilibrium, showing all of your steps and calculations. Keep your
answers rounded to four decimal places throughout. Write a brief (2-3 sentence) conclusion about the suitability
of this corn population for use in your intended research.
Corn Cob
Number of Kernels
Kernels with BB
genotype
Kernels with Bb
genotype
Kernels with bb
genotype
1
720
202
343
175
2
611
191
295
125
3
602
194
261
147
4
789
176
426
187
5
776
224
347
205
6
512
152
239
121
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