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Practice problem

Punnett Squares — Examples & Diagrams

By Deena Hauze
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This is a punnett square showing a cross between two flowers. The genotype of one parent, the pistil, is capital B and lowercase b. The genotype of the second parent, the pollen, is not given. The offspring of the cross are: 1 capital B, capital B plant, 2 capital B lowercase b plants, and 1 lowercase b, lowercase b plant.

Image source: By Madprime CC BY 2.0, via Wikimedia Commons

The punnet square above shows the possible genotypes of the offspring from two plants. However, the genotype of the pollen is unknown. Using the information from the offspring, determine the genotype of the pollen.

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Type a concept, like “slope” or “photosynthesis”.

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