5 labs
esolutions
what_are_the_predicted_q.docx
Plant Genetics
Hands-On Labs, Inc.
Version42-0104-00-01
Lab Report Assistant
Thisdocumentisnotmeanttobeasubstitute foraformallaboratoryreport.TheLabReport Assistantissimplyasummaryoftheexperiment’squestions,diagramsifneeded,anddatatables thatshouldbeaddressedinaformallabreport.Theintentistofacilitatestudents’writingoflab reports by providing this informationin an editable filewhich can be sent to an instructor.
Observations
Data Table 1: Punnettsquare.
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Data Table 2: Seedling data. |
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Seedling Color |
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Green |
Yellow |
Total |
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Numberof Seedlings |
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Percentageof Total |
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( Ex p e ri m e n t ) ( P lan t Ge n e t i cs )
( ww w . H O L s c i e n c e . c o m ) ( 4 ) ( © H a nds-On L a bs, I n c . )
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Data Table 3: Frequency calculations. |
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Frequency |
Expected Values |
Actual Values |
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Green |
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Yellow |
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Total |
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Data Table 4: Corn kernel data. |
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Number of Kernels |
Kernel Percentage (Divide count by total, then multiplyby 100) |
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Kernel Coloration |
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Purple |
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Yellow |
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Total |
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KernelTexture |
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Smooth |
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Wrinkled |
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Total |
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Data Table 5: Punnet square for dihybrid cross.
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Data Table 6: Data from corn kernels. |
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Number Counted |
Ratio:Number counted / total |
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Purple and smooth |
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Purple and wrinkled |
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Yellowand smooth |
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Yellowand wrinkled |
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TOTAL |
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Exercise 1: Observing a Monohybrid Cross
Questions
A. What are the predicted ratiosof the phenotypes in the plants?
B. What was the total number of seeds that germinated?
C. What are the actual ratiosof the phenotypes displayed in the tobacco plants? D. Explain why it may be important to collect data from a larger population.
E. Ifallyellowseedlingswereremovedfromthepopulation,wouldthenextgenerationstillhave a chance at displaying the yellow allele? Explain.
F. Wouldacrossbetweenahomozygousandaheterozygousparentshowthesameratios?
Explain.
Exercise 2: Dihybrid Crossing with Corn
Questions
A. What are the probable phenotypes of the corn ear parents with regard to coloration?
B. What are the probable texture phenotypes of the corn parents?
