Data Sheet: Activity – Genetics
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Name
Course
Date
Activity Data Code
Procedure I – Part A – Baby bugs when parents are BB and bb
Data Table – Enter your Baby Bug Counts
BB Baby Bug
Count
Bb Baby Bug
Count
bb Baby Bug
Count
Percentage Tables – Enter the Baby Bug percentages
Tip: Baby Bug Percentage = 100% ´ (Baby Bug Count) / (Total Number of Baby Bugs)
BB Baby Bug
Percentage
Bb Baby Bug
Percentage
bb Baby Bug
Percentage
Tip: Blue Rimmed Baby Bug Percentage = BB Baby Bug Percent + Bb Baby Bug Percent
Blue Rimmed Baby Bug
Percentage
Yellow Rimmed Baby Bug
Percentage
Observations and Questions
[1] Complete the Punnett square below when the parents are BB and bb.
Punnett Square
Male
Female
Alleles/Genes
B
B
[2] Describe your baby bug results from this data run in terms of genotypes and phenotypes.
[3] Why are there no BB baby bugs or bb baby bugs from this data run?
[4] Do the results for the allele distributions confirm the entries in your Punnett Square? Please explain.
[5] What evidence from this data run supports the hypothesis that the B allele is heterozygous dominant? Explain your reasoning.
