Gummy Bear Lab - Genetics Pedigree Analysis
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Gummy Bear Lab
Mom is Homozygous Dominant & Dad is Homozygous Recessive.
The Dominant trait is _______________ The recessive trait is _______________
[Pedigree Chart]
Legend:
Circle = Female
Square = Male
Mom (Genotype: $GG$, Phenotype: ____)
Dad (Genotype: $gg$, Phenotype: ____)
Offspring 1 (Genotype: ____, Phenotype: ____)
Offspring 2 (Genotype: ____, Phenotype: ____)
Offspring 3 (Genotype: ____, Phenotype: ____)
Teddy (Homozygous Recessive, Genotype: ____, Phenotype: ____)
Offspring of Teddy and Offspring 3:
Offspring A (Genotype: ____, Phenotype: ____)
Offspring B (Genotype: ____, Phenotype: ____)
This question includes visual content: A worksheet titled 'Gummy Bear Lab'. It features a pedigree chart using standard symbols (circle for female, square for male). At the top, it states: 'Mom is Homozygous Dominant & Dad is Homozygous Recessive'. The pedigree shows 'Mom' (circle, handwritten genotype $GG$) and 'Dad' (square, handwritten genotype $gg$) producing three 'Offspring'. One of these offspring (Offspring 3, a female) is shown mated with another male labeled 'Teddy' (square, handwritten note 'Homozygous Recessive'), which produces two more offspring squares. There are blank lines for 'The Dominant trait is', 'The recessive trait is', and fields for 'Genotype' and 'Phenotype' under every individual in the family tree.
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Step by Step Written Solution
In this Gummy Bear Lab, we are going to determine the genotypes and phenotypes of two generations based on the information provided in the pedigree chart.
Gummy Bear Lab - Genetics
The problem states that Mom is homozygous dominant and Dad is homozygous recessive. Looking at the handwritten notes, the letter G is used for the alleles. So, Mom is capital G capital G, and Dad is lowercase g lowercase g.
Let's perform a Punnett square for the first generation. Since Mom only carries dominant alleles and Dad only carries recessive ones, all offspring will receive one of each.
Because one hundred percent of the offspring are G g, all three offspring in the first row of the diagram will have the genotype G g, which is heterozygous.
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