Question

Define genotypic and phenotypic ratio

Answer 1

Genotypic Ratio

1. The genotypic ratio shows the number of times a characteristic of an organism will be seen in the offspring when genes for certain traits are crossed.
2. To find the genotypic ratio, count the number of times each combination appears in the grid, starting in the upper left square.

Phenotypic Ratio

1. Phenotypic ratio pertains to the relative number of offspring manifesting a particular trait or combination of traits.
2. It can be determined by doing a test cross and identifying the frequency of a trait or trait combinations that will be expressed based on the genotypes of the offspring.

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